Bismarck weather by month

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

Temperature
Rainfall
Sunshine & UV index

Temperature in Bismarck (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	19	27	39	55	68	77	84	82	70	59	39	25
Min temperature (night-time)	-2	5	18	30	43	52	57	54	43	32	18	3
Heat & Humidity	0	0	0	0	0	0	M	L	0	0	0	0

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

Sunshine & UV index in Bismarck

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	5	6	7	8	10	11	11	10	8	6	4	4
Daily hours of daylight	9	10	12	14	15	16	15	14	13	11	9	9
UV Index (Maximum)	1	2	3	5	6	8	8	7	5	3	1	1

Rainfall in Bismarck

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	8	7	8	9	10	11	9	8	7	5	6	8
Average monthly rainfall (inches)	0.4	0.4	0.7	1.6	2.2	2.8	2.2	1.7	1.5	0.9	0.5	0.5

More about Bismarck

Bismarck by month

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

Recommended for North Dakota

GO Airport Shuttle discount code: 5% off airport transfers

Discount Code

Save EXTRA 5% on airport transfers worldwide
Book private taxis & shuttle buses with discount code
Enter in coupon box on 'Reservations' page

Show discount code

******WEB

Redeem GO Airport Shuttle discount code >>

Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for North Dakota (Bismarck) 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 Bismarck?

Bismarck has a cold semi arid climate with warm summers.

Bismarck weather in January

Expect daytime maximum temperatures of 19°F in Bismarck, 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.

19
19°F max day temperature
5
5 hours of sunshine per day
8
8 days with some rainfall
-2
-2°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
0.4
0.4 inches of monthly rainfall
1
1 (Low) UV index

Back to months

Bismarck weather in February

Expect daytime maximum temperatures of 27°F in Bismarck, 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.

27
27°F max day temperature
6
6 hours of sunshine per day
7
7 days with some rainfall
5
5°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
0.4
0.4 inches of monthly rainfall
2
2 (Low) UV index

Back to months

Bismarck weather in March

Expect daytime maximum temperatures of 39°F in Bismarck, 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.

39
39°F max day temperature
7
7 hours of sunshine per day
8
8 days with some rainfall
18
18°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
0.7
0.7 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Bismarck weather in April

Expect daytime maximum temperatures of 55°F in Bismarck, North Dakota in April based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 1.6 inches of rainfall in the month.

55
55°F max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
30
30°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.6
1.6 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Bismarck weather in May

Expect daytime maximum temperatures of 68°F in Bismarck, 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 2.2 inches of rainfall in the month.

68
68°F max day temperature
10
10 hours of sunshine per day
10
10 days with some rainfall
43
43°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
2.2
2.2 inches of monthly rainfall
6
6 (High) UV index

Back to months

Bismarck weather in June

Expect daytime maximum temperatures of 77°F in Bismarck, North Dakota in June based on long-term weather averages. There are 11 hours of sunshine per day on average with 11 days with some rainfall and typically 2.8 inches of rainfall in the month.

77
77°F max day temperature
11
11 hours of sunshine per day
11
11 days with some rainfall
52
52°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
2.8
2.8 inches of monthly rainfall
8
8 (Very High) UV index

Back to months

Bismarck weather in July

Expect daytime maximum temperatures of 84°F in Bismarck, North Dakota in July based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 2.2 inches of rainfall in the month.

84
84°F max day temperature
11
11 hours of sunshine per day
9
9 days with some rainfall
57
57°F min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
2.2
2.2 inches of monthly rainfall
8
8 (Very High) UV index

Back to months

Bismarck weather in August

Expect daytime maximum temperatures of 82°F in Bismarck, North Dakota in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 1.7 inches of rainfall in the month.

82
82°F max day temperature
10
10 hours of sunshine per day
8
8 days with some rainfall
54
54°F min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
1.7
1.7 inches of monthly rainfall
7
7 (High) UV index

Back to months

Bismarck weather in September

Expect daytime maximum temperatures of 70°F in Bismarck, North Dakota in September based on long-term weather averages. There are 8 hours of sunshine per day on average.

70
70°F max day temperature
8
8 hours of sunshine per day
7
7 days with some rainfall
43
43°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
1.5
1.5 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Bismarck weather in October

Expect daytime maximum temperatures of 59°F in Bismarck, North Dakota in October based on long-term weather averages. There are 6 hours of sunshine per day on average.

59
59°F max day temperature
6
6 hours of sunshine per day
5
5 days with some rainfall
32
32°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
0.9
0.9 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Bismarck weather in November

Expect daytime maximum temperatures of 39°F in Bismarck, 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.

39
39°F max day temperature
4
4 hours of sunshine per day
6
6 days with some rainfall
18
18°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
0.5
0.5 inches of monthly rainfall
1
1 (Low) UV index

Back to months

Bismarck weather in December

Expect daytime maximum temperatures of 25°F in Bismarck, 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.