Champaign weather by month

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

Temperature in Champaign (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
32°F maximum daytime temperature in January in Champaign32
37°F maximum daytime temperature in February in Champaign37
48°F maximum daytime temperature in March in Champaign48
63°F maximum daytime temperature in April in Champaign63
73°F maximum daytime temperature in May in Champaign73
82°F maximum daytime temperature in June in Champaign82
86°F maximum daytime temperature in July in Champaign86
82°F maximum daytime temperature in August in Champaign82
77°F maximum daytime temperature in September in Champaign77
64°F maximum daytime temperature in October in Champaign64
50°F maximum daytime temperature in November in Champaign50
37°F maximum daytime temperature in December in Champaign37
Min temperature (night-time)
16°F minimum night-time temperature in January in Champaign16
19°F minimum night-time temperature in February in Champaign19
30°F minimum night-time temperature in March in Champaign30
41°F minimum night-time temperature in April in Champaign41
52°F minimum night-time temperature in May in Champaign52
61°F minimum night-time temperature in June in Champaign61
64°F minimum night-time temperature in July in Champaign64
63°F minimum night-time temperature in August in Champaign63
55°F minimum night-time temperature in September in Champaign55
45°F minimum night-time temperature in October in Champaign45
34°F minimum night-time temperature in November in Champaign34
21°F minimum night-time temperature in December in Champaign21
Heat & Humidity
No heat & humidity in January in Champaign0
No heat & humidity in February in Champaign0
No heat & humidity in March in Champaign0
No heat & humidity in April in Champaign0
No heat & humidity in May in Champaign0
Moderate heat & humidity in June in ChampaignM
Moderate heat & humidity in July in ChampaignM
Moderate heat & humidity in August in ChampaignM
Low heat & humidity in September in ChampaignL
No heat & humidity in October in Champaign0
No heat & humidity in November in Champaign0
No heat & humidity in December in Champaign0

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

Sunshine & UV index in Champaign

  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 Champaign10
11 hours of daylight per day in February in Champaign11
12 hours of daylight per day in March in Champaign12
13 hours of daylight per day in April in Champaign13
14 hours of daylight per day in May in Champaign14
15 hours of daylight per day in June in Champaign15
15 hours of daylight per day in July in Champaign15
14 hours of daylight per day in August in Champaign14
12 hours of daylight per day in September in Champaign12
11 hours of daylight per day in October in Champaign11
10 hours of daylight per day in November in Champaign10
9 hours of daylight per day in December in Champaign9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Champaign2
UV (maximum) index 3 (Moderate) in February in Champaign3
UV (maximum) index 4 (Moderate) in March in Champaign4
UV (maximum) index 6 (High) in April in Champaign6
UV (maximum) index 8 (Very High) in May in Champaign8
UV (maximum) index 9 (Very High) in June in Champaign9
UV (maximum) index 9 (Very High) in July in Champaign9
UV (maximum) index 8 (Very High) in August in Champaign8
UV (maximum) index 6 (High) in September in Champaign6
UV (maximum) index 4 (Moderate) in October in Champaign4
UV (maximum) index 2 (Low) in November in Champaign2
UV (maximum) index 1 (Low) in December in Champaign1

Rainfall in Champaign

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in Champaign10
9 days with some rainfall in February in Champaign9
12 days with some rainfall in March in Champaign12
12 days with some rainfall in April in Champaign12
11 days with some rainfall in May in Champaign11
9 days with some rainfall in June in Champaign9
9 days with some rainfall in July in Champaign9
9 days with some rainfall in August in Champaign9
8 days with some rainfall in September in Champaign8
8 days with some rainfall in October in Champaign8
10 days with some rainfall in November in Champaign10
12 days with some rainfall in December in Champaign12
Average monthly rainfall (inches)
1.9 inches monthly rainfall in January in Champaign1.9
1.9 inches monthly rainfall in February in Champaign1.9
3.2 inches monthly rainfall in March in Champaign3.2
3.9 inches monthly rainfall in April in Champaign3.9
4.0 inches monthly rainfall in May in Champaign4.0
4.0 inches monthly rainfall in June in Champaign4.0
4.4 inches monthly rainfall in July in Champaign4.4
3.8 inches monthly rainfall in August in Champaign3.8
3.2 inches monthly rainfall in September in Champaign3.2
2.7 inches monthly rainfall in October in Champaign2.7
3.1 inches monthly rainfall in November in Champaign3.1
2.8 inches monthly rainfall in December in Champaign2.8

More about Champaign

Champaign by month

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

Recommended for Illinois

  • Explore latest special offers & online deals from TUI
  • Free child places & £0 deposits with direct debit available
  • Book summer & winter sun holidays in 2026/2027

TUITUI deal finder

The climate guide for Illinois (Champaign) 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 Champaign?

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

Champaign weather in January

Expect daytime maximum temperatures of 32°F in Champaign, Illinois in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 1.9 inches of rainfall in the month, which might fall as snow.

  • 32°F maximum daytime temperature in January in Champaign32
    32°F max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in January in Champaign10
    10 days with some rainfall
  • 16°F minimum night-time temperature in January in Champaign16
    16°F min night temperature
  • 10 hours of daylight per day in January in Champaign10
    10 hours of daylight per day
  • No heat & humidity in January in Champaign0
    No heat & humidity
  • 1.9 inches monthly rainfall in January in Champaign1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Champaign2
    2 (Low) UV index

Back to months

Champaign weather in February

Expect daytime maximum temperatures of 37°F in Champaign, Illinois in February based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 1.9 inches of rainfall in the month, which might fall as snow.

  • 37°F maximum daytime temperature in February in Champaign37
    37°F max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in February in Champaign9
    9 days with some rainfall
  • 19°F minimum night-time temperature in February in Champaign19
    19°F min night temperature
  • 11 hours of daylight per day in February in Champaign11
    11 hours of daylight per day
  • No heat & humidity in February in Champaign0
    No heat & humidity
  • 1.9 inches monthly rainfall in February in Champaign1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Champaign3
    3 (Moderate) UV index

Back to months

Champaign weather in March

Expect daytime maximum temperatures of 48°F in Champaign, Illinois in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 3.2 inches of rainfall in the month.

  • 48°F maximum daytime temperature in March in Champaign48
    48°F max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in March in Champaign12
    12 days with some rainfall
  • 30°F minimum night-time temperature in March in Champaign30
    30°F min night temperature
  • 12 hours of daylight per day in March in Champaign12
    12 hours of daylight per day
  • No heat & humidity in March in Champaign0
    No heat & humidity
  • 3.2 inches monthly rainfall in March in Champaign3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in Champaign4
    4 (Moderate) UV index

Back to months

Champaign weather in April

Expect daytime maximum temperatures of 63°F in Champaign, Illinois in April based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 3.9 inches of rainfall in the month.

  • 63°F maximum daytime temperature in April in Champaign63
    63°F max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in April in Champaign12
    12 days with some rainfall
  • 41°F minimum night-time temperature in April in Champaign41
    41°F min night temperature
  • 13 hours of daylight per day in April in Champaign13
    13 hours of daylight per day
  • No heat & humidity in April in Champaign0
    No heat & humidity
  • 3.9 inches monthly rainfall in April in Champaign3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in April in Champaign6
    6 (High) UV index

Back to months

Champaign weather in May

Expect daytime maximum temperatures of 73°F in Champaign, Illinois in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 4.0 inches of rainfall in the month.

  • 73°F maximum daytime temperature in May in Champaign73
    73°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Champaign11
    11 days with some rainfall
  • 52°F minimum night-time temperature in May in Champaign52
    52°F min night temperature
  • 14 hours of daylight per day in May in Champaign14
    14 hours of daylight per day
  • No heat & humidity in May in Champaign0
    No heat & humidity
  • 4.0 inches monthly rainfall in May in Champaign4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Champaign8
    8 (Very High) UV index

Back to months

Champaign weather in June

Expect daytime maximum temperatures of 82°F in Champaign, Illinois in June based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 4.0 inches of rainfall in the month.

  • 82°F maximum daytime temperature in June in Champaign82
    82°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in June in Champaign9
    9 days with some rainfall
  • 61°F minimum night-time temperature in June in Champaign61
    61°F min night temperature
  • 15 hours of daylight per day in June in Champaign15
    15 hours of daylight per day
  • Moderate heat & humidity in June in ChampaignM
    Moderate heat & humidity
  • 4.0 inches monthly rainfall in June in Champaign4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Champaign9
    9 (Very High) UV index

Back to months

Champaign weather in July

Expect daytime maximum temperatures of 86°F in Champaign, Illinois in July based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 4.4 inches of rainfall in the month.

  • 86°F maximum daytime temperature in July in Champaign86
    86°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in July in Champaign9
    9 days with some rainfall
  • 64°F minimum night-time temperature in July in Champaign64
    64°F min night temperature
  • 15 hours of daylight per day in July in Champaign15
    15 hours of daylight per day
  • Moderate heat & humidity in July in ChampaignM
    Moderate heat & humidity
  • 4.4 inches monthly rainfall in July in Champaign4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Champaign9
    9 (Very High) UV index

Back to months

Champaign weather in August

Expect daytime maximum temperatures of 82°F in Champaign, Illinois in August based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 3.8 inches of rainfall in the month.

  • 82°F maximum daytime temperature in August in Champaign82
    82°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Champaign9
    9 days with some rainfall
  • 63°F minimum night-time temperature in August in Champaign63
    63°F min night temperature
  • 14 hours of daylight per day in August in Champaign14
    14 hours of daylight per day
  • Moderate heat & humidity in August in ChampaignM
    Moderate heat & humidity
  • 3.8 inches monthly rainfall in August in Champaign3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Champaign8
    8 (Very High) UV index

Back to months

Champaign weather in September

Expect daytime maximum temperatures of 77°F in Champaign, Illinois in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.2 inches of rainfall in the month.

  • 77°F maximum daytime temperature in September in Champaign77
    77°F max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Champaign8
    8 days with some rainfall
  • 55°F minimum night-time temperature in September in Champaign55
    55°F min night temperature
  • 12 hours of daylight per day in September in Champaign12
    12 hours of daylight per day
  • Low heat & humidity in September in ChampaignL
    Low heat & humidity
  • 3.2 inches monthly rainfall in September in Champaign3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Champaign6
    6 (High) UV index

Back to months

Champaign weather in October

Expect daytime maximum temperatures of 64°F in Champaign, Illinois in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 2.7 inches of rainfall in the month.

  • 64°F maximum daytime temperature in October in Champaign64
    64°F max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in October in Champaign8
    8 days with some rainfall
  • 45°F minimum night-time temperature in October in Champaign45
    45°F min night temperature
  • 11 hours of daylight per day in October in Champaign11
    11 hours of daylight per day
  • No heat & humidity in October in Champaign0
    No heat & humidity
  • 2.7 inches monthly rainfall in October in Champaign2.7
    2.7 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Champaign4
    4 (Moderate) UV index

Back to months

Champaign weather in November

Expect daytime maximum temperatures of 50°F in Champaign, Illinois in November based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 3.1 inches of rainfall in the month.

  • 50°F maximum daytime temperature in November in Champaign50
    50°F max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in November in Champaign10
    10 days with some rainfall
  • 34°F minimum night-time temperature in November in Champaign34
    34°F min night temperature
  • 10 hours of daylight per day in November in Champaign10
    10 hours of daylight per day
  • No heat & humidity in November in Champaign0
    No heat & humidity
  • 3.1 inches monthly rainfall in November in Champaign3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in November in Champaign2
    2 (Low) UV index

Back to months

Champaign weather in December

Expect daytime maximum temperatures of 37°F in Champaign, Illinois in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 12 days with some rainfall and typically 2.8 inches of rainfall in the month, which might fall as snow.

  • 37°F maximum daytime temperature in December in Champaign37
    37°F max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in December in Champaign12
    12 days with some rainfall
  • 21°F minimum night-time temperature in December in Champaign21
    21°F min night temperature
  • 9 hours of daylight per day in December in Champaign9
    9 hours of daylight per day
  • No heat & humidity in December in Champaign0
    No heat & humidity
  • 2.8 inches monthly rainfall in December in Champaign2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Champaign1
    1 (Low) UV index

Back to months

More about Champaign

Champaign by month

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

Recommended for Illinois

  • Explore latest special offers & online deals from TUI
  • Free child places & £0 deposits with direct debit available
  • Book summer & winter sun holidays in 2026/2027

TUITUI deal finder

The climate guide for Illinois (Champaign) 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 Champaign weather with the UK

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

Maximum daytime temperature (°F)

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

Metric (°C)  |  Imperial (°F)

Compare more weather >>

Back to top

More about the USA

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^