Annual mean 16°C · wettest around January · prevailing wind W
Warmest
28.0 °C
Coldest
11.6 °C
Wettest
24%
Windiest
5.0 m/s
Prevailing
W
4.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Suisun City over the whole year is 16°C. July is the hottest month, with highs of about 27°C; December is the coldest, with lows of about 7°C. The rainy (wet) season in Suisun City runs from October to May, peaking in January with a 25% chance of rain on a given day. The dry season is June to September; July is the driest month, at 5%. Winds in Suisun City are highest in July, averaging 4.7 m/s (17 km/h), and lightest in November, at 2.2 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Suisun City come in July, when the sky is typically 6% covered; January is the cloudiest month, at 41%.
Month by month Suisun City 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
13°C
7°C
10°C
25%
41%
2.5 m/s
11
0
76
February
14°C
7°C
11°C
24%
26%
3.0 m/s
25
0
78
March
16°C
8°C
13°C
25%
35%
3.3 m/s
34
1
82
April
20°C
10°C
17°C
17%
21%
3.7 m/s
65
9
82
May
23°C
13°C
20°C
17%
17%
4.4 m/s
73
23
66
June
26°C
16°C
24°C
7%
7%
4.6 m/s
67
44
42
July
27°C
16°C
26°C
5%
6%
4.7 m/s
59
55
31
August
27°C
16°C
26°C
6%
9%
4.3 m/s
59
57
28
September
26°C
15°C
25°C
8%
11%
3.6 m/s
69
47
40
October
23°C
13°C
21°C
16%
13%
2.8 m/s
80
23
67
November
17°C
8°C
14°C
20%
25%
2.2 m/s
44
1
88
December
12°C
7°C
10°C
25%
37%
2.4 m/s
10
0
76
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 Suisun City weather by season
Year round, Suisun City has days of about 12°C at their warmest in December, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from 7°C to 16°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around January and least likely around July. 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.
Suisun City weather in winterDecember to February
High 13°CLow 7°CRain 25%
Winter in Suisun City has typical daily highs of about 13°C and lows of about 7°C, with a 25% chance of rain on a given day.
Suisun City weather in springMarch to May
High 19°CLow 11°CRain 20%
Spring in Suisun City has typical daily highs of about 19°C and lows of about 11°C, with a 20% chance of rain on a given day.
Suisun City weather in summerJune to August
High 27°CLow 16°CRain 6%
Summer in Suisun City has typical daily highs of about 27°C and lows of about 16°C, with a 6% chance of rain on a given day.
Suisun City weather in autumnSeptember to November
High 22°CLow 12°CRain 15%
Autumn in Suisun City has typical daily highs of about 22°C and lows of about 12°C, with a 15% chance of rain on a given day.
When is the rainy season in Suisun City?
The rainy (wet) season in Suisun City runs from October to May, peaking in January with a 25% chance of rain on a given day. The dry season is June to September; July is the driest month, at 5%.
What time of year is Suisun City windiest?
Winds in Suisun City are highest in July, averaging 4.7 m/s (17 km/h), and lightest in November, at 2.2 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Suisun City year round?
The average temperature in Suisun City over the whole year is 16°C. July is the hottest month, with highs of about 27°C; December is the coldest, with lows of about 7°C.