Annual mean 12°C · wettest around March · prevailing wind SW
Warmest
28.4 °C
Coldest
-0.2 °C
Wettest
29%
Windiest
5.5 m/s
Prevailing
SW
4.4 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 Westerville over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -3°C. Westerville has no sharply defined rainy season: the chance of rain on a given day runs from 24% in August, the driest month, to 31% in March, the wettest. Winds in Westerville are highest in March, averaging 4.0 m/s (14 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Westerville come in September, when the sky is typically 40% covered; January is the cloudiest month, at 71%.
Month by month Westerville 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
1°C
-3°C
-5°C
29%
71%
3.9 m/s
1
0
7
February
4°C
-1°C
-2°C
29%
61%
3.9 m/s
2
0
16
March
9°C
3°C
4°C
31%
56%
4.0 m/s
11
0
35
April
15°C
8°C
10°C
30%
54%
3.8 m/s
33
2
58
May
21°C
14°C
18°C
30%
53%
3.3 m/s
61
20
60
June
26°C
19°C
25°C
27%
42%
3.1 m/s
62
46
33
July
28°C
21°C
28°C
28%
40%
2.5 m/s
39
68
10
August
27°C
19°C
27°C
24%
42%
2.3 m/s
49
60
19
September
25°C
16°C
24°C
27%
40%
2.3 m/s
65
42
42
October
18°C
10°C
15°C
28%
48%
2.9 m/s
46
11
65
November
9°C
3°C
5°C
28%
52%
3.3 m/s
11
0
37
December
4°C
0°C
-1°C
30%
65%
3.6 m/s
0
0
15
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 Westerville weather by season
Year round, Westerville has days of about 1°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -3°C to 21°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around March and least likely around August. 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.
Westerville weather in winterDecember to February
High 3°CLow -1°CRain 30%
Winter in Westerville has typical daily highs of about 3°C and lows of about -1°C, with a 30% chance of rain on a given day.
Westerville weather in springMarch to May
High 15°CLow 8°CRain 30%
Spring in Westerville has typical daily highs of about 15°C and lows of about 8°C, with a 30% chance of rain on a given day.
Westerville weather in summerJune to August
High 27°CLow 20°CRain 26%
Summer in Westerville has typical daily highs of about 27°C and lows of about 20°C, with a 26% chance of rain on a given day.
Westerville weather in autumnSeptember to November
High 17°CLow 9°CRain 28%
Autumn in Westerville has typical daily highs of about 17°C and lows of about 9°C, with a 28% chance of rain on a given day.
When is the rainy season in Westerville?
Westerville has no sharply defined rainy season: the chance of rain on a given day runs from 24% in August, the driest month, to 31% in March, the wettest.
What time of year is Westerville windiest?
Winds in Westerville are highest in March, averaging 4.0 m/s (14 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Westerville year round?
The average temperature in Westerville over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -3°C.