Annual mean 9°C · wettest around April · prevailing wind W
Warmest
26.2 °C
Coldest
-0.9 °C
Wettest
24%
Windiest
4.2 m/s
Prevailing
W
3.3 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 Rochester over the whole year is 9°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -5°C. Rochester has no sharply defined rainy season: the chance of rain on a given day runs from 13% in September, the driest month, to 19% in April, the wettest. Winds in Rochester are highest in March, averaging 3.0 m/s (11 km/h), and lightest in August, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Rochester come in August, when the sky is typically 45% covered; April is the cloudiest month, at 57%.
Month by month Rochester 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
-5°C
-6°C
15%
54%
2.7 m/s
0
0
3
February
1°C
-5°C
-4°C
16%
52%
2.7 m/s
1
0
8
March
5°C
-1°C
-1°C
15%
52%
3.0 m/s
1
0
16
April
11°C
4°C
6°C
19%
57%
2.9 m/s
10
1
42
May
17°C
10°C
14°C
15%
55%
2.5 m/s
41
9
69
June
23°C
16°C
22°C
15%
51%
2.1 m/s
68
27
55
July
26°C
19°C
27°C
15%
46%
1.9 m/s
50
54
23
August
25°C
17°C
26°C
14%
45%
1.7 m/s
61
47
32
September
21°C
13°C
21°C
13%
47%
1.8 m/s
70
23
62
October
15°C
8°C
13°C
18%
54%
2.0 m/s
38
3
72
November
8°C
2°C
3°C
15%
48%
2.5 m/s
8
0
29
December
2°C
-3°C
-3°C
17%
52%
2.5 m/s
0
0
7
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 Rochester weather by season
Year round, Rochester has days of about -1°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -5°C to 19°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around April and least likely around September. 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.
Rochester weather in winterDecember to February
High 1°CLow -4°CRain 16%
Winter in Rochester has typical daily highs of about 1°C and lows of about -4°C, with a 16% chance of rain on a given day.
Rochester weather in springMarch to May
High 11°CLow 4°CRain 17%
Spring in Rochester has typical daily highs of about 11°C and lows of about 4°C, with a 17% chance of rain on a given day.
Rochester weather in summerJune to August
High 25°CLow 17°CRain 15%
Summer in Rochester has typical daily highs of about 25°C and lows of about 17°C, with a 15% chance of rain on a given day.
Rochester weather in autumnSeptember to November
High 15°CLow 8°CRain 15%
Autumn in Rochester has typical daily highs of about 15°C and lows of about 8°C, with a 15% chance of rain on a given day.
When is the rainy season in Rochester?
Rochester has no sharply defined rainy season: the chance of rain on a given day runs from 13% in September, the driest month, to 19% in April, the wettest.
What time of year is Rochester windiest?
Winds in Rochester are highest in March, averaging 3.0 m/s (11 km/h), and lightest in August, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Rochester year round?
The average temperature in Rochester over the whole year is 9°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -5°C.