Annual mean 12°C · wettest around February · prevailing wind W
Warmest
28.8 °C
Coldest
1.8 °C
Wettest
25%
Windiest
3.8 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
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 Jefferson over the whole year is 12°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C. Jefferson has no sharply defined rainy season: the chance of rain on a given day runs from 24% in June, the driest month, to 30% in February, the wettest. Winds in Jefferson are highest in March, averaging 2.7 m/s (10 km/h), and lightest in July, at 1.5 m/s (5 km/h). The prevailing wind is from the W. The clearest skies in Jefferson come in November, when the sky is typically 40% covered; May is the cloudiest month, at 54%.
Month by month Jefferson 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
2°C
-2°C
-3°C
27%
52%
2.4 m/s
1
0
8
February
4°C
-1°C
-1°C
30%
49%
2.3 m/s
2
0
16
March
9°C
2°C
4°C
29%
48%
2.7 m/s
8
0
34
April
14°C
7°C
10°C
28%
52%
2.6 m/s
26
3
60
May
20°C
12°C
18°C
27%
54%
2.0 m/s
59
16
68
June
25°C
17°C
25°C
24%
43%
1.8 m/s
66
43
38
July
29°C
21°C
30°C
28%
41%
1.5 m/s
29
64
7
August
27°C
19°C
28°C
27%
42%
1.5 m/s
44
61
16
September
23°C
15°C
23°C
25%
46%
1.5 m/s
70
34
49
October
17°C
10°C
15°C
27%
48%
1.7 m/s
54
8
73
November
10°C
4°C
6°C
25%
40%
2.0 m/s
13
0
44
December
4°C
0°C
0°C
29%
51%
2.1 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 Jefferson weather by season
Year round, Jefferson has days of about 2°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -2°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 February and least likely around June. 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.
Jefferson weather in winterDecember to February
High 4°CLow -1°CRain 29%
Winter in Jefferson has typical daily highs of about 4°C and lows of about -1°C, with a 29% chance of rain on a given day.
Jefferson weather in springMarch to May
High 14°CLow 7°CRain 28%
Spring in Jefferson has typical daily highs of about 14°C and lows of about 7°C, with a 28% chance of rain on a given day.
Jefferson weather in summerJune to August
High 27°CLow 19°CRain 26%
Summer in Jefferson has typical daily highs of about 27°C and lows of about 19°C, with a 26% chance of rain on a given day.
Jefferson weather in autumnSeptember to November
High 17°CLow 10°CRain 26%
Autumn in Jefferson has typical daily highs of about 17°C and lows of about 10°C, with a 26% chance of rain on a given day.
When is the rainy season in Jefferson?
Jefferson has no sharply defined rainy season: the chance of rain on a given day runs from 24% in June, the driest month, to 30% in February, the wettest.
What time of year is Jefferson windiest?
Winds in Jefferson are highest in March, averaging 2.7 m/s (10 km/h), and lightest in July, at 1.5 m/s (5 km/h). The prevailing wind is from the W.
What is the average temperature in Jefferson year round?
The average temperature in Jefferson over the whole year is 12°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C.