Hartford weather by month

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

Temperature
Rainfall
Sunshine & UV index

Temperature in Hartford (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	1	2	8	15	21	26	28	28	23	18	11	3
Min temperature (night-time)	-9	-7	-2	3	8	13	17	16	11	5	0	-6
Heat & Humidity	0	0	0	0	0	L	M	M	0	0	0	0

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

Sunshine & UV index in Hartford

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	6	6	7	8	8	9	9	9	7	6	5	5
Daily hours of daylight	10	11	12	13	15	15	15	14	12	11	10	9
UV Index (Maximum)	1	2	4	6	7	8	8	8	6	4	2	1

Rainfall in Hartford

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	11	10	11	11	12	11	9	10	9	8	11	12
Average monthly rainfall (mm)	84	79	92	100	101	95	88	93	95	90	100	97

More about Hartford

Hartford by month

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

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The climate guide for Connecticut (Hartford) 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 Hartford?

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

Hartford weather in January

Expect daytime maximum temperatures of 1°C in Hartford, Connecticut in January based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 84 mm of rainfall in the month, which might fall as snow.

1
1°C max day temperature
6
6 hours of sunshine per day
11
11 days with some rainfall
-9
-9°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
84
84 mm of monthly rainfall
1
1 (Low) UV index

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Hartford weather in February

Expect daytime maximum temperatures of 2°C in Hartford, Connecticut in February based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 79 mm of rainfall in the month, which might fall as snow.

2
2°C max day temperature
6
6 hours of sunshine per day
10
10 days with some rainfall
-7
-7°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
79
79 mm of monthly rainfall
2
2 (Low) UV index

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Hartford weather in March

Expect daytime maximum temperatures of 8°C in Hartford, Connecticut 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 92 mm of rainfall in the month.

8
8°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
-2
-2°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
92
92 mm of monthly rainfall
4
4 (Moderate) UV index

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Hartford weather in April

Expect daytime maximum temperatures of 15°C in Hartford, Connecticut 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 100 mm of rainfall in the month.

15
15°C max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
3
3°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
100
100 mm of monthly rainfall
6
6 (High) UV index

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Hartford weather in May

Expect daytime maximum temperatures of 21°C in Hartford, Connecticut 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 101 mm of rainfall in the month.

21
21°C max day temperature
8
8 hours of sunshine per day
12
12 days with some rainfall
8
8°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
101
101 mm of monthly rainfall
7
7 (High) UV index

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Hartford weather in June

Expect daytime maximum temperatures of 26°C in Hartford, Connecticut in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 95 mm of rainfall in the month.

26
26°C max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
13
13°C min night temperature
15
15 hours of daylight per day
L
Low heat & humidity
95
95 mm of monthly rainfall
8
8 (Very High) UV index

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Hartford weather in July

Expect daytime maximum temperatures of 28°C in Hartford, Connecticut in July based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 88 mm of rainfall in the month.

28
28°C max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
17
17°C min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
88
88 mm of monthly rainfall
8
8 (Very High) UV index

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Hartford weather in August

Expect daytime maximum temperatures of 28°C in Hartford, Connecticut in August based on long-term weather averages. There are 9 hours of sunshine per day on average with 10 days with some rainfall and typically 93 mm of rainfall in the month.

28
28°C max day temperature
9
9 hours of sunshine per day
10
10 days with some rainfall
16
16°C min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
93
93 mm of monthly rainfall
8
8 (Very High) UV index

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Hartford weather in September

Expect daytime maximum temperatures of 23°C in Hartford, Connecticut in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 95 mm of rainfall in the month.

23
23°C max day temperature
7
7 hours of sunshine per day
9
9 days with some rainfall
11
11°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
95
95 mm of monthly rainfall
6
6 (High) UV index

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Hartford weather in October

Expect daytime maximum temperatures of 18°C in Hartford, Connecticut in October based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 90 mm of rainfall in the month.

18
18°C max day temperature
6
6 hours of sunshine per day
8
8 days with some rainfall
5
5°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
90
90 mm of monthly rainfall
4
4 (Moderate) UV index

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Hartford weather in November

Expect daytime maximum temperatures of 11°C in Hartford, Connecticut in November based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 100 mm of rainfall in the month.

11
11°C max day temperature
5
5 hours of sunshine per day
11
11 days with some rainfall
0
0°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
100
100 mm of monthly rainfall
2
2 (Low) UV index

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Hartford weather in December

Expect daytime maximum temperatures of 3°C in Hartford, Connecticut in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 97 mm of rainfall in the month, which might fall as snow.