Frederick weather by month

Check out Frederick weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Frederick (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
4°C maximum daytime temperature in January in Frederick4
6°C maximum daytime temperature in February in Frederick6
12°C maximum daytime temperature in March in Frederick12
18°C maximum daytime temperature in April in Frederick18
23°C maximum daytime temperature in May in Frederick23
28°C maximum daytime temperature in June in Frederick28
31°C maximum daytime temperature in July in Frederick31
30°C maximum daytime temperature in August in Frederick30
26°C maximum daytime temperature in September in Frederick26
19°C maximum daytime temperature in October in Frederick19
13°C maximum daytime temperature in November in Frederick13
7°C maximum daytime temperature in December in Frederick7
Min temperature (night-time)
-6°C minimum night-time temperature in January in Frederick-6
-5°C minimum night-time temperature in February in Frederick-5
0°C minimum night-time temperature in March in Frederick0
5°C minimum night-time temperature in April in Frederick5
10°C minimum night-time temperature in May in Frederick10
15°C minimum night-time temperature in June in Frederick15
18°C minimum night-time temperature in July in Frederick18
17°C minimum night-time temperature in August in Frederick17
13°C minimum night-time temperature in September in Frederick13
6°C minimum night-time temperature in October in Frederick6
2°C minimum night-time temperature in November in Frederick2
-3°C minimum night-time temperature in December in Frederick-3
Heat & Humidity
No heat & humidity in January in Frederick0
No heat & humidity in February in Frederick0
No heat & humidity in March in Frederick0
No heat & humidity in April in Frederick0
No heat & humidity in May in Frederick0
Moderate heat & humidity in June in FrederickM
High heat & humidity in July in FrederickH
Moderate heat & humidity in August in FrederickM
Low heat & humidity in September in FrederickL
No heat & humidity in October in Frederick0
No heat & humidity in November in Frederick0
No heat & humidity in December in Frederick0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Frederick

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Frederick10
11 hours of daylight per day in February in Frederick11
12 hours of daylight per day in March in Frederick12
13 hours of daylight per day in April in Frederick13
14 hours of daylight per day in May in Frederick14
15 hours of daylight per day in June in Frederick15
15 hours of daylight per day in July in Frederick15
14 hours of daylight per day in August in Frederick14
12 hours of daylight per day in September in Frederick12
11 hours of daylight per day in October in Frederick11
10 hours of daylight per day in November in Frederick10
9 hours of daylight per day in December in Frederick9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Frederick2
UV (maximum) index 3 (Moderate) in February in Frederick3
UV (maximum) index 5 (Moderate) in March in Frederick5
UV (maximum) index 6 (High) in April in Frederick6
UV (maximum) index 8 (Very High) in May in Frederick8
UV (maximum) index 9 (Very High) in June in Frederick9
UV (maximum) index 9 (Very High) in July in Frederick9
UV (maximum) index 8 (Very High) in August in Frederick8
UV (maximum) index 7 (High) in September in Frederick7
UV (maximum) index 4 (Moderate) in October in Frederick4
UV (maximum) index 2 (Low) in November in Frederick2
UV (maximum) index 2 (Low) in December in Frederick2

Rainfall in Frederick

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Frederick11
10 days with some rainfall in February in Frederick10
11 days with some rainfall in March in Frederick11
11 days with some rainfall in April in Frederick11
12 days with some rainfall in May in Frederick12
10 days with some rainfall in June in Frederick10
10 days with some rainfall in July in Frederick10
10 days with some rainfall in August in Frederick10
8 days with some rainfall in September in Frederick8
8 days with some rainfall in October in Frederick8
10 days with some rainfall in November in Frederick10
11 days with some rainfall in December in Frederick11
Average monthly rainfall (mm)
72 mm monthly rainfall in January in Frederick72
69 mm monthly rainfall in February in Frederick69
86 mm monthly rainfall in March in Frederick86
83 mm monthly rainfall in April in Frederick83
103 mm monthly rainfall in May in Frederick103
98 mm monthly rainfall in June in Frederick98
87 mm monthly rainfall in July in Frederick87
93 mm monthly rainfall in August in Frederick93
90 mm monthly rainfall in September in Frederick90
83 mm monthly rainfall in October in Frederick83
87 mm monthly rainfall in November in Frederick87
81 mm monthly rainfall in December in Frederick81

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Frederick by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Maryland (Frederick) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Frederick?

Frederick has a cold climate with hot summers and some rainfall in all months.

Frederick weather in January

Expect daytime maximum temperatures of 4°C in Frederick, Maryland in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 72 mm of rainfall in the month, which might fall as snow.

  • 4°C maximum daytime temperature in January in Frederick4
    4°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in January in Frederick11
    11 days with some rainfall
  • -6°C minimum night-time temperature in January in Frederick-6
    -6°C min night temperature
  • 10 hours of daylight per day in January in Frederick10
    10 hours of daylight per day
  • No heat & humidity in January in Frederick0
    No heat & humidity
  • 72 mm monthly rainfall in January in Frederick72
    72 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Frederick2
    2 (Low) UV index

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Frederick weather in February

Expect daytime maximum temperatures of 6°C in Frederick, Maryland in February based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 69 mm of rainfall in the month, which might fall as snow.

  • 6°C maximum daytime temperature in February in Frederick6
    6°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in February in Frederick10
    10 days with some rainfall
  • -5°C minimum night-time temperature in February in Frederick-5
    -5°C min night temperature
  • 11 hours of daylight per day in February in Frederick11
    11 hours of daylight per day
  • No heat & humidity in February in Frederick0
    No heat & humidity
  • 69 mm monthly rainfall in February in Frederick69
    69 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Frederick3
    3 (Moderate) UV index

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Frederick weather in March

Expect daytime maximum temperatures of 12°C in Frederick, Maryland in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 86 mm of rainfall in the month.

  • 12°C maximum daytime temperature in March in Frederick12
    12°C max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in March in Frederick11
    11 days with some rainfall
  • 0°C minimum night-time temperature in March in Frederick0
    0°C min night temperature
  • 12 hours of daylight per day in March in Frederick12
    12 hours of daylight per day
  • No heat & humidity in March in Frederick0
    No heat & humidity
  • 86 mm monthly rainfall in March in Frederick86
    86 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in March in Frederick5
    5 (Moderate) UV index

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Frederick weather in April

Expect daytime maximum temperatures of 18°C in Frederick, Maryland in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 83 mm of rainfall in the month.

  • 18°C maximum daytime temperature in April in Frederick18
    18°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in April in Frederick11
    11 days with some rainfall
  • 5°C minimum night-time temperature in April in Frederick5
    5°C min night temperature
  • 13 hours of daylight per day in April in Frederick13
    13 hours of daylight per day
  • No heat & humidity in April in Frederick0
    No heat & humidity
  • 83 mm monthly rainfall in April in Frederick83
    83 mm of monthly rainfall
  • UV (maximum) index 6 (High) in April in Frederick6
    6 (High) UV index

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Frederick weather in May

Expect daytime maximum temperatures of 23°C in Frederick, Maryland in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 103 mm of rainfall in the month.

  • 23°C maximum daytime temperature in May in Frederick23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in May in Frederick12
    12 days with some rainfall
  • 10°C minimum night-time temperature in May in Frederick10
    10°C min night temperature
  • 14 hours of daylight per day in May in Frederick14
    14 hours of daylight per day
  • No heat & humidity in May in Frederick0
    No heat & humidity
  • 103 mm monthly rainfall in May in Frederick103
    103 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Frederick8
    8 (Very High) UV index

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Frederick weather in June

Expect daytime maximum temperatures of 28°C in Frederick, Maryland in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 10 days with some rainfall and typically 98 mm of rainfall in the month.

  • 28°C maximum daytime temperature in June in Frederick28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in June in Frederick10
    10 days with some rainfall
  • 15°C minimum night-time temperature in June in Frederick15
    15°C min night temperature
  • 15 hours of daylight per day in June in Frederick15
    15 hours of daylight per day
  • Moderate heat & humidity in June in FrederickM
    Moderate heat & humidity
  • 98 mm monthly rainfall in June in Frederick98
    98 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Frederick9
    9 (Very High) UV index

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Frederick weather in July

Expect daytime maximum temperatures of 31°C in Frederick, Maryland in July and high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 10 days with some rainfall and typically 87 mm of rainfall in the month.

  • 31°C maximum daytime temperature in July in Frederick31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in July in Frederick10
    10 days with some rainfall
  • 18°C minimum night-time temperature in July in Frederick18
    18°C min night temperature
  • 15 hours of daylight per day in July in Frederick15
    15 hours of daylight per day
  • High heat & humidity in July in FrederickH
    High heat & humidity
  • 87 mm monthly rainfall in July in Frederick87
    87 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Frederick9
    9 (Very High) UV index

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Frederick weather in August

Expect daytime maximum temperatures of 30°C in Frederick, Maryland in August based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 93 mm of rainfall in the month.

  • 30°C maximum daytime temperature in August in Frederick30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in August in Frederick10
    10 days with some rainfall
  • 17°C minimum night-time temperature in August in Frederick17
    17°C min night temperature
  • 14 hours of daylight per day in August in Frederick14
    14 hours of daylight per day
  • Moderate heat & humidity in August in FrederickM
    Moderate heat & humidity
  • 93 mm monthly rainfall in August in Frederick93
    93 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Frederick8
    8 (Very High) UV index

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Frederick weather in September

Expect daytime maximum temperatures of 26°C in Frederick, Maryland in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 90 mm of rainfall in the month.

  • 26°C maximum daytime temperature in September in Frederick26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in September in Frederick8
    8 days with some rainfall
  • 13°C minimum night-time temperature in September in Frederick13
    13°C min night temperature
  • 12 hours of daylight per day in September in Frederick12
    12 hours of daylight per day
  • Low heat & humidity in September in FrederickL
    Low heat & humidity
  • 90 mm monthly rainfall in September in Frederick90
    90 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Frederick7
    7 (High) UV index

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Frederick weather in October

Expect daytime maximum temperatures of 19°C in Frederick, Maryland in October based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 83 mm of rainfall in the month.

  • 19°C maximum daytime temperature in October in Frederick19
    19°C max day temperature
  • 6 hours of sunshine per day
  • 8 days with some rainfall in October in Frederick8
    8 days with some rainfall
  • 6°C minimum night-time temperature in October in Frederick6
    6°C min night temperature
  • 11 hours of daylight per day in October in Frederick11
    11 hours of daylight per day
  • No heat & humidity in October in Frederick0
    No heat & humidity
  • 83 mm monthly rainfall in October in Frederick83
    83 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Frederick4
    4 (Moderate) UV index

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Frederick weather in November

Expect daytime maximum temperatures of 13°C in Frederick, Maryland in November based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 87 mm of rainfall in the month.

  • 13°C maximum daytime temperature in November in Frederick13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in November in Frederick10
    10 days with some rainfall
  • 2°C minimum night-time temperature in November in Frederick2
    2°C min night temperature
  • 10 hours of daylight per day in November in Frederick10
    10 hours of daylight per day
  • No heat & humidity in November in Frederick0
    No heat & humidity
  • 87 mm monthly rainfall in November in Frederick87
    87 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in November in Frederick2
    2 (Low) UV index

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Frederick weather in December

Expect daytime maximum temperatures of 7°C in Frederick, Maryland in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 11 days with some rainfall and typically 81 mm of rainfall in the month.

  • 7°C maximum daytime temperature in December in Frederick7
    7°C max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in December in Frederick11
    11 days with some rainfall
  • -3°C minimum night-time temperature in December in Frederick-3
    -3°C min night temperature
  • 9 hours of daylight per day in December in Frederick9
    9 hours of daylight per day
  • No heat & humidity in December in Frederick0
    No heat & humidity
  • 81 mm monthly rainfall in December in Frederick81
    81 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Frederick2
    2 (Low) UV index

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More about Frederick

Frederick by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Maryland

  • Save EXTRA 5% on airport transfers worldwide
  • Book private taxis & shuttle buses with discount code
  • Enter in coupon box on 'Reservations' page
Show discount codeShow discount code ******WEB

Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Maryland (Frederick) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Compare Frederick weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Frederick, Maryland, USA and the UK (London).

Maximum daytime temperature (°C)

Frederick, Maryland, USA
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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