Annual mean 11°C · wettest around May · prevailing wind SW
Warmest
27.9 °C
Coldest
-4.6 °C
Wettest
51%
Windiest
6.5 m/s
Prevailing
SW
4.9 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 11°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -7°C. Norwalk has no sharply defined rainy season: the chance of rain on a given day runs from 44% in February, the driest month, to 52% in May, the wettest. Winds in Norwalk are highest in April, averaging 4.9 m/s (18 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Norwalk come in July, when the sky is typically 36% covered; January is the cloudiest month, at 60%.
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
-3°C
-7°C
-10°C
46%
60%
4.2 m/s
0
0
1
February
0°C
-6°C
-6°C
44%
51%
4.3 m/s
1
0
10
March
8°C
1°C
1°C
48%
56%
4.6 m/s
5
0
24
April
14°C
6°C
8°C
49%
53%
4.9 m/s
21
0
48
May
20°C
13°C
17°C
52%
51%
3.8 m/s
57
12
62
June
27°C
19°C
26°C
50%
37%
3.5 m/s
53
52
25
July
28°C
20°C
29°C
48%
36%
2.8 m/s
40
61
12
August
27°C
19°C
27°C
49%
38%
2.8 m/s
52
53
23
September
24°C
15°C
23°C
49%
38%
3.1 m/s
63
38
42
October
16°C
8°C
11°C
49%
46%
3.7 m/s
34
3
58
November
8°C
1°C
2°C
47%
47%
4.1 m/s
7
0
28
December
1°C
-4°C
-5°C
47%
54%
4.1 m/s
0
0
8
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 -3°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -7°C to 20°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around May and least likely around February. 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 -1°CLow -5°CRain 45%
Winter in Norwalk has typical daily highs of about -1°C and lows of about -5°C, with a 45% chance of rain on a given day.
Norwalk weather in springMarch to May
High 14°CLow 7°CRain 50%
Spring in Norwalk has typical daily highs of about 14°C and lows of about 7°C, with a 50% chance of rain on a given day.
Norwalk weather in summerJune to August
High 27°CLow 19°CRain 49%
Summer in Norwalk has typical daily highs of about 27°C and lows of about 19°C, with a 49% chance of rain on a given day.
Norwalk weather in autumnSeptember to November
High 16°CLow 8°CRain 48%
Autumn in Norwalk has typical daily highs of about 16°C and lows of about 8°C, with a 48% 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 44% in February, the driest month, to 52% in May, the wettest.
What time of year is Norwalk windiest?
Winds in Norwalk are highest in April, averaging 4.9 m/s (18 km/h), and lightest in July, at 2.8 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Norwalk year round?
The average temperature in Norwalk over the whole year is 11°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -7°C.