Annual mean 12°C · wettest around December · prevailing wind SW
Warmest
21.8 °C
Coldest
5.8 °C
Wettest
26%
Windiest
5.7 m/s
Prevailing
SW
4.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Rochester over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. Rochester has no sharply defined rainy season: the chance of rain on a given day runs from 13% in August, the driest month, to 22% in December, the wettest. Winds in Rochester are highest in February, averaging 4.7 m/s (17 km/h), and lightest in May, at 3.6 m/s (13 km/h). The prevailing wind is from the SW. The clearest skies in Rochester come in August, when the sky is typically 48% covered; December is the cloudiest month, at 68%.
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
7°C
4°C
2°C
19%
65%
4.3 m/s
0
0
15
February
8°C
5°C
3°C
20%
62%
4.7 m/s
0
0
23
March
10°C
5°C
5°C
20%
60%
4.4 m/s
2
0
36
April
13°C
7°C
8°C
13%
51%
3.8 m/s
10
1
57
May
16°C
11°C
13°C
16%
50%
3.6 m/s
38
1
79
June
20°C
14°C
17°C
14%
49%
3.8 m/s
66
8
76
July
22°C
16°C
19°C
14%
49%
3.7 m/s
78
15
69
August
21°C
15°C
19°C
13%
48%
3.7 m/s
77
12
73
September
19°C
13°C
16°C
15%
51%
3.6 m/s
61
5
80
October
15°C
11°C
12°C
20%
56%
3.8 m/s
24
0
79
November
10°C
7°C
6°C
20%
62%
4.0 m/s
1
0
44
December
8°C
6°C
4°C
22%
68%
4.2 m/s
0
0
26
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 7°C at their warmest in January, its coolest month, and 22°C in July, its warmest; the coolest hours of the day run from 4°C to 16°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around December 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.
Rochester weather in winterDecember to February
High 8°CLow 5°CRain 20%
Winter in Rochester has typical daily highs of about 8°C and lows of about 5°C, with a 20% chance of rain on a given day.
Rochester weather in springMarch to May
High 13°CLow 7°CRain 16%
Spring in Rochester has typical daily highs of about 13°C and lows of about 7°C, with a 16% chance of rain on a given day.
Rochester weather in summerJune to August
High 21°CLow 15°CRain 14%
Summer in Rochester has typical daily highs of about 21°C and lows of about 15°C, with a 14% chance of rain on a given day.
Rochester weather in autumnSeptember to November
High 15°CLow 10°CRain 18%
Autumn in Rochester has typical daily highs of about 15°C and lows of about 10°C, with a 18% 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 August, the driest month, to 22% in December, the wettest.
What time of year is Rochester windiest?
Winds in Rochester are highest in February, averaging 4.7 m/s (17 km/h), and lightest in May, at 3.6 m/s (13 km/h). The prevailing wind is from the SW.
What is the average temperature in Rochester year round?
The average temperature in Rochester over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.