Annual mean 12°C · wettest around March · prevailing wind SW
Warmest
28.2 °C
Coldest
0.1 °C
Wettest
38%
Windiest
5.8 m/s
Prevailing
SW
4.5 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 Riverside 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. Riverside has no sharply defined rainy season: the chance of rain on a given day runs from 30% in August, the driest month, to 37% in March, the wettest. Winds in Riverside are highest in March, averaging 4.3 m/s (15 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 Riverside come in September, when the sky is typically 38% covered; January is the cloudiest month, at 69%.
Month by month Riverside 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
33%
69%
4.1 m/s
0
0
7
February
4°C
-1°C
-1°C
34%
59%
4.1 m/s
3
0
17
March
10°C
3°C
4°C
37%
56%
4.3 m/s
11
0
33
April
15°C
8°C
10°C
36%
54%
4.0 m/s
32
2
57
May
21°C
14°C
19°C
36%
51%
3.4 m/s
59
21
57
June
26°C
19°C
25°C
33%
41%
3.0 m/s
60
45
32
July
28°C
21°C
29°C
33%
39%
2.5 m/s
38
65
10
August
27°C
19°C
28°C
30%
40%
2.3 m/s
46
59
18
September
25°C
16°C
24°C
30%
38%
2.4 m/s
61
43
39
October
18°C
10°C
15°C
33%
46%
3.0 m/s
46
11
63
November
10°C
3°C
5°C
34%
50%
3.5 m/s
11
0
37
December
4°C
0°C
-1°C
33%
62%
3.8 m/s
1
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 Riverside weather by season
Year round, Riverside 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.
Riverside weather in winterDecember to February
High 3°CLow -1°CRain 34%
Winter in Riverside has typical daily highs of about 3°C and lows of about -1°C, with a 34% chance of rain on a given day.
Riverside weather in springMarch to May
High 15°CLow 8°CRain 36%
Spring in Riverside has typical daily highs of about 15°C and lows of about 8°C, with a 36% chance of rain on a given day.
Riverside weather in summerJune to August
High 27°CLow 20°CRain 32%
Summer in Riverside has typical daily highs of about 27°C and lows of about 20°C, with a 32% chance of rain on a given day.
Riverside weather in autumnSeptember to November
High 18°CLow 9°CRain 32%
Autumn in Riverside has typical daily highs of about 18°C and lows of about 9°C, with a 32% chance of rain on a given day.
When is the rainy season in Riverside?
Riverside has no sharply defined rainy season: the chance of rain on a given day runs from 30% in August, the driest month, to 37% in March, the wettest.
What time of year is Riverside windiest?
Winds in Riverside are highest in March, averaging 4.3 m/s (15 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 Riverside year round?
The average temperature in Riverside 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.