Annual mean 9°C · wettest around April · prevailing wind W
Warmest
26.0 °C
Coldest
-4.3 °C
Wettest
29%
Windiest
4.6 m/s
Prevailing
W
3.8 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 Williston 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 -7°C. Williston has no sharply defined rainy season: the chance of rain on a given day runs from 19% in September, the driest month, to 26% in April, the wettest. Winds in Williston are highest in March, averaging 3.3 m/s (12 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Williston come in July, when the sky is typically 49% covered; December is the cloudiest month, at 72%.
Month by month Williston 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
-4°C
-7°C
-9°C
23%
71%
3.0 m/s
0
0
1
February
-2°C
-6°C
-8°C
23%
65%
3.2 m/s
0
0
3
March
3°C
-2°C
-3°C
23%
61%
3.3 m/s
0
0
11
April
10°C
3°C
5°C
26%
60%
3.2 m/s
10
0
36
May
18°C
10°C
14°C
24%
56%
2.8 m/s
44
8
68
June
23°C
16°C
21°C
22%
54%
2.6 m/s
69
24
59
July
26°C
19°C
26°C
22%
49%
2.3 m/s
63
52
29
August
25°C
17°C
24°C
22%
50%
2.1 m/s
73
44
40
September
21°C
13°C
19°C
19%
49%
2.1 m/s
67
20
67
October
14°C
8°C
11°C
24%
59%
2.5 m/s
28
2
65
November
5°C
1°C
1°C
24%
64%
2.9 m/s
4
0
18
December
-1°C
-3°C
-6°C
25%
72%
3.0 m/s
0
0
3
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 Williston weather by season
Year round, Williston has days of about -4°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -7°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.
Williston weather in winterDecember to February
High -2°CLow -5°CRain 24%
Winter in Williston has typical daily highs of about -2°C and lows of about -5°C, with a 24% chance of rain on a given day.
Williston weather in springMarch to May
High 10°CLow 4°CRain 24%
Spring in Williston has typical daily highs of about 10°C and lows of about 4°C, with a 24% chance of rain on a given day.
Williston weather in summerJune to August
High 24°CLow 17°CRain 22%
Summer in Williston has typical daily highs of about 24°C and lows of about 17°C, with a 22% chance of rain on a given day.
Williston weather in autumnSeptember to November
High 13°CLow 7°CRain 22%
Autumn in Williston has typical daily highs of about 13°C and lows of about 7°C, with a 22% chance of rain on a given day.
When is the rainy season in Williston?
Williston has no sharply defined rainy season: the chance of rain on a given day runs from 19% in September, the driest month, to 26% in April, the wettest.
What time of year is Williston windiest?
Winds in Williston are highest in March, averaging 3.3 m/s (12 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Williston year round?
The average temperature in Williston 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 -7°C.