Annual mean 15°C · wettest around July · prevailing wind W
Warmest
30.7 °C
Coldest
7.1 °C
Wettest
50%
Windiest
4.2 m/s
Prevailing
W
3.1 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 Petersburg over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 1°C. Petersburg has no sharply defined rainy season: the chance of rain on a given day runs from 41% in October, the driest month, to 44% in July, the wettest. Winds in Petersburg are highest in March, averaging 2.6 m/s (9 km/h), and lightest in August, at 1.6 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Petersburg come in November, when the sky is typically 30% covered; May is the cloudiest month, at 45%.
Month by month Petersburg 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
7°C
1°C
3°C
44%
39%
2.3 m/s
6
0
27
February
10°C
3°C
6°C
44%
42%
2.3 m/s
16
0
42
March
14°C
5°C
10°C
43%
37%
2.6 m/s
27
1
56
April
19°C
10°C
16°C
44%
37%
2.6 m/s
52
13
64
May
23°C
15°C
22°C
43%
45%
2.1 m/s
60
35
46
June
28°C
20°C
29°C
44%
36%
1.9 m/s
38
59
14
July
30°C
22°C
33°C
44%
33%
1.7 m/s
9
46
2
August
29°C
21°C
31°C
42%
37%
1.6 m/s
21
54
5
September
26°C
18°C
27°C
43%
42%
1.7 m/s
49
51
24
October
21°C
12°C
20°C
41%
37%
1.7 m/s
66
20
63
November
14°C
5°C
11°C
41%
30%
1.8 m/s
27
4
62
December
9°C
3°C
6°C
43%
38%
1.9 m/s
10
0
40
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 Petersburg weather by season
Year round, Petersburg has days of about 7°C at their warmest in January, its coolest month, and 30°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 15°C around the clock. Rain is most likely around July and least likely around October. 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.
Petersburg weather in winterDecember to February
High 9°CLow 2°CRain 44%
Winter in Petersburg has typical daily highs of about 9°C and lows of about 2°C, with a 44% chance of rain on a given day.
Petersburg weather in springMarch to May
High 19°CLow 10°CRain 44%
Spring in Petersburg has typical daily highs of about 19°C and lows of about 10°C, with a 44% chance of rain on a given day.
Petersburg weather in summerJune to August
High 29°CLow 21°CRain 43%
Summer in Petersburg has typical daily highs of about 29°C and lows of about 21°C, with a 43% chance of rain on a given day.
Petersburg weather in autumnSeptember to November
High 20°CLow 12°CRain 42%
Autumn in Petersburg has typical daily highs of about 20°C and lows of about 12°C, with a 42% chance of rain on a given day.
When is the rainy season in Petersburg?
Petersburg has no sharply defined rainy season: the chance of rain on a given day runs from 41% in October, the driest month, to 44% in July, the wettest.
What time of year is Petersburg windiest?
Winds in Petersburg are highest in March, averaging 2.6 m/s (9 km/h), and lightest in August, at 1.6 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Petersburg year round?
The average temperature in Petersburg over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 1°C.