Williston weather by month

Check out Williston weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Williston (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	-7	-3	4	13	20	26	29	28	21	15	3	-5
Min temperature (night-time)	-19	-15	-8	-1	6	11	13	12	6	0	-9	-16
Heat & Humidity	0	0	0	0	0	0	M	M	0	0	0	0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Williston

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	5	6	7	8	10	11	12	11	8	6	4	4
Daily hours of daylight	9	10	12	14	15	16	16	14	13	11	9	8
UV Index (Maximum)	1	1	3	5	6	7	8	7	5	3	1	1

Rainfall in Williston

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	8	6	8	8	10	10	9	7	7	5	6	8
Average monthly rainfall (mm)	12	10	14	32	49	72	51	39	36	20	12	12

More about Williston

Williston by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for North Dakota (Williston) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Williston?

Williston has a cold semi arid climate with warm summers.

Williston weather in January

Expect daytime maximum temperatures of -7°C in Williston, North Dakota in January based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

-7
-7°C max day temperature
5
5 hours of sunshine per day
8
8 days with some rainfall
-19
-19°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
12
12 mm of monthly rainfall
1
1 (Low) UV index

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Williston weather in February

Expect daytime maximum temperatures of -3°C in Williston, North Dakota in February based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

-3
-3°C max day temperature
6
6 hours of sunshine per day
6
6 days with some rainfall
-15
-15°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
10
10 mm of monthly rainfall
1
1 (Low) UV index

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Williston weather in March

Expect daytime maximum temperatures of 4°C in Williston, North Dakota in March based on long-term weather averages. There are 7 hours of sunshine per day on average, which might fall as snow.

4
4°C max day temperature
7
7 hours of sunshine per day
8
8 days with some rainfall
-8
-8°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
14
14 mm of monthly rainfall
3
3 (Moderate) UV index

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Williston weather in April

Expect daytime maximum temperatures of 13°C in Williston, North Dakota in April based on long-term weather averages. There are 8 hours of sunshine per day on average.

13
13°C max day temperature
8
8 hours of sunshine per day
8
8 days with some rainfall
-1
-1°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
32
32 mm of monthly rainfall
5
5 (Moderate) UV index

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Williston weather in May

Expect daytime maximum temperatures of 20°C in Williston, North Dakota in May based on long-term weather averages. There are 10 hours of sunshine per day on average with 10 days with some rainfall and typically 49 mm of rainfall in the month.

20
20°C max day temperature
10
10 hours of sunshine per day
10
10 days with some rainfall
6
6°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
49
49 mm of monthly rainfall
6
6 (High) UV index

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Williston weather in June

Expect daytime maximum temperatures of 26°C in Williston, North Dakota in June based on long-term weather averages. There are 11 hours of sunshine per day on average with 10 days with some rainfall and typically 72 mm of rainfall in the month.

26
26°C max day temperature
11
11 hours of sunshine per day
10
10 days with some rainfall
11
11°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
72
72 mm of monthly rainfall
7
7 (High) UV index

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Williston weather in July

Expect daytime maximum temperatures of 29°C in Williston, North Dakota in July based on long-term weather averages. There are 12 hours of sunshine per day on average with typically 51 mm of rainfall in the month.

29
29°C max day temperature
12
12 hours of sunshine per day
9
9 days with some rainfall
13
13°C min night temperature
16
16 hours of daylight per day
M
Moderate heat & humidity
51
51 mm of monthly rainfall
8
8 (Very High) UV index

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Williston weather in August

Expect daytime maximum temperatures of 28°C in Williston, North Dakota in August based on long-term weather averages. There are 11 hours of sunshine per day on average.

28
28°C max day temperature
11
11 hours of sunshine per day
7
7 days with some rainfall
12
12°C min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
39
39 mm of monthly rainfall
7
7 (High) UV index

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Williston weather in September

Expect daytime maximum temperatures of 21°C in Williston, North Dakota in September based on long-term weather averages. There are 8 hours of sunshine per day on average.

21
21°C max day temperature
8
8 hours of sunshine per day
7
7 days with some rainfall
6
6°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
36
36 mm of monthly rainfall
5
5 (Moderate) UV index

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Williston weather in October

Expect daytime maximum temperatures of 15°C in Williston, North Dakota in October based on long-term weather averages. There are 6 hours of sunshine per day on average.

15
15°C max day temperature
6
6 hours of sunshine per day
5
5 days with some rainfall
0
0°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
20
20 mm of monthly rainfall
3
3 (Moderate) UV index

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Williston weather in November

Expect daytime maximum temperatures of 3°C in Williston, North Dakota in November based on long-term weather averages. There are 4 hours of sunshine per day on average, which might fall as snow.

3
3°C max day temperature
4
4 hours of sunshine per day
6
6 days with some rainfall
-9
-9°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
12
12 mm of monthly rainfall
1
1 (Low) UV index

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Williston weather in December

Expect daytime maximum temperatures of -5°C in Williston, North Dakota in December based on long-term weather averages. There are 4 hours of sunshine per day on average, which might fall as snow.