Annual mean 8°C · wettest around April · prevailing wind W
Warmest
26.1 °C
Coldest
-3.3 °C
Wettest
30%
Windiest
4.0 m/s
Prevailing
W
3.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Hartford over the whole year is 8°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C. Hartford has no sharply defined rainy season: the chance of rain on a given day runs from 21% in January, the driest month, to 25% in April, the wettest. Winds in Hartford are highest in March, averaging 2.7 m/s (10 km/h), and lightest in September, at 1.5 m/s (5 km/h). The prevailing wind is from the W. The clearest skies in Hartford come in July, when the sky is typically 45% covered; December is the cloudiest month, at 62%.
Month by month Hartford climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-3°C
-7°C
-8°C
21%
62%
2.4 m/s
0
0
1
February
-1°C
-6°C
-6°C
21%
57%
2.5 m/s
0
0
5
March
4°C
-3°C
-2°C
22%
54%
2.7 m/s
1
0
13
April
10°C
3°C
6°C
25%
57%
2.7 m/s
11
0
41
May
18°C
9°C
15°C
24%
52%
2.3 m/s
45
10
67
June
23°C
14°C
21°C
22%
49%
2.1 m/s
69
27
56
July
26°C
17°C
26°C
23%
45%
1.8 m/s
58
56
26
August
25°C
16°C
24°C
22%
48%
1.6 m/s
69
46
38
September
21°C
12°C
20°C
22%
49%
1.5 m/s
68
22
65
October
14°C
7°C
11°C
25%
58%
1.8 m/s
32
2
67
November
6°C
0°C
1°C
23%
57%
2.2 m/s
6
0
21
December
-0°C
-4°C
-5°C
25%
62%
2.1 m/s
0
0
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Hartford weather by season
Year round, Hartford has days of about -3°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -7°C to 17°C through the year, and the average temperature over the year is 8°C around the clock. Rain is most likely around April and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Hartford weather in winterDecember to February
High -1°CLow -6°CRain 23%
Winter in Hartford has typical daily highs of about -1°C and lows of about -6°C, with a 23% chance of rain on a given day.
Hartford weather in springMarch to May
High 11°CLow 3°CRain 24%
Spring in Hartford has typical daily highs of about 11°C and lows of about 3°C, with a 24% chance of rain on a given day.
Hartford weather in summerJune to August
High 24°CLow 16°CRain 22%
Summer in Hartford has typical daily highs of about 24°C and lows of about 16°C, with a 22% chance of rain on a given day.
Hartford weather in autumnSeptember to November
High 13°CLow 6°CRain 23%
Autumn in Hartford has typical daily highs of about 13°C and lows of about 6°C, with a 23% chance of rain on a given day.
When is the rainy season in Hartford?
Hartford has no sharply defined rainy season: the chance of rain on a given day runs from 21% in January, the driest month, to 25% in April, the wettest.
What time of year is Hartford windiest?
Winds in Hartford are highest in March, averaging 2.7 m/s (10 km/h), and lightest in September, at 1.5 m/s (5 km/h). The prevailing wind is from the W.
What is the average temperature in Hartford year round?
The average temperature in Hartford over the whole year is 8°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C.