Annual mean 12°C · wettest around December · prevailing wind W
Warmest
27.7 °C
Coldest
1.7 °C
Wettest
13%
Windiest
5.1 m/s
Prevailing
W
4.3 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 Norwalk over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -1°C. Norwalk has no sharply defined rainy season: the chance of rain on a given day runs from 6% in June, the driest month, to 12% in December, the wettest. Winds in Norwalk are highest in March, averaging 4.1 m/s (15 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the W. The clearest skies in Norwalk come in November, when the sky is typically 40% covered; April is the cloudiest month, at 52%.
Month by month Norwalk 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
2°C
-1°C
-4°C
10%
52%
3.8 m/s
0
0
7
February
4°C
-0°C
-2°C
11%
49%
3.6 m/s
1
0
13
March
8°C
2°C
2°C
10%
48%
4.1 m/s
4
0
27
April
13°C
7°C
8°C
11%
52%
3.9 m/s
17
1
55
May
18°C
13°C
16°C
11%
52%
3.3 m/s
54
9
76
June
24°C
18°C
23°C
6%
43%
3.0 m/s
75
36
51
July
27°C
22°C
28°C
8%
41%
2.8 m/s
44
68
13
August
26°C
20°C
27°C
7%
41%
2.8 m/s
58
59
24
September
23°C
17°C
22°C
9%
44%
2.9 m/s
75
28
58
October
17°C
11°C
14°C
10%
48%
3.1 m/s
50
5
76
November
10°C
5°C
6°C
8%
40%
3.5 m/s
12
0
42
December
5°C
1°C
-0°C
12%
51%
3.5 m/s
0
0
14
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 Norwalk weather by season
Year round, Norwalk has days of about 2°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -1°C to 22°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around December and least likely around June. 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.
Norwalk weather in winterDecember to February
High 3°CLow -0°CRain 11%
Winter in Norwalk has typical daily highs of about 3°C and lows of about -0°C, with a 11% chance of rain on a given day.
Norwalk weather in springMarch to May
High 13°CLow 7°CRain 10%
Spring in Norwalk has typical daily highs of about 13°C and lows of about 7°C, with a 10% chance of rain on a given day.
Norwalk weather in summerJune to August
High 26°CLow 20°CRain 7%
Summer in Norwalk has typical daily highs of about 26°C and lows of about 20°C, with a 7% chance of rain on a given day.
Norwalk weather in autumnSeptember to November
High 17°CLow 11°CRain 9%
Autumn in Norwalk has typical daily highs of about 17°C and lows of about 11°C, with a 9% chance of rain on a given day.
When is the rainy season in Norwalk?
Norwalk has no sharply defined rainy season: the chance of rain on a given day runs from 6% in June, the driest month, to 12% in December, the wettest.
What time of year is Norwalk windiest?
Winds in Norwalk are highest in March, averaging 4.1 m/s (15 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the W.
What is the average temperature in Norwalk year round?
The average temperature in Norwalk over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -1°C.