Template:Bismarck, North Dakota weatherbox

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 63
(17)
73
(23)
81
(27)
93
(34)
102
(39)
111
(44)
114
(46)
109
(43)
105
(41)
95
(35)
79
(26)
66
(19)
114
(46)
Mean maximum °F (°C) 46.7
(8.2)
49.9
(9.9)
66.7
(19.3)
80.2
(26.8)
87.1
(30.6)
93.2
(34.0)
98.3
(36.8)
98.2
(36.8)
93.0
(33.9)
82.1
(27.8)
63.9
(17.7)
49.4
(9.7)
101.4
(38.6)
Mean daily maximum °F (°C) 23.2
(−4.9)
27.8
(−2.3)
41.0
(5.0)
56.0
(13.3)
68.3
(20.2)
77.9
(25.5)
84.7
(29.3)
83.5
(28.6)
73.4
(23.0)
57.1
(13.9)
40.6
(4.8)
27.7
(−2.4)
55.1
(12.8)
Daily mean °F (°C) 12.8
(−10.7)
17.5
(−8.1)
30.1
(−1.1)
43.2
(6.2)
55.3
(12.9)
65.4
(18.6)
71.3
(21.8)
69.6
(20.9)
59.7
(15.4)
44.8
(7.1)
29.9
(−1.2)
17.9
(−7.8)
43.1
(6.2)
Mean daily minimum °F (°C) 2.4
(−16.4)
7.2
(−13.8)
19.1
(−7.2)
30.4
(−0.9)
42.4
(5.8)
52.9
(11.6)
57.9
(14.4)
55.7
(13.2)
45.9
(7.7)
32.6
(0.3)
19.1
(−7.2)
8.1
(−13.3)
31.1
(−0.5)
Mean minimum °F (°C) −23.8
(−31.0)
−17.6
(−27.6)
−4.7
(−20.4)
13.4
(−10.3)
26.9
(−2.8)
39.7
(4.3)
46.2
(7.9)
43.3
(6.3)
29.8
(−1.2)
15.9
(−8.9)
−1.0
(−18.3)
−16.0
(−26.7)
−27.9
(−33.3)
Record low °F (°C) −45
(−43)
−45
(−43)
−36
(−38)
−12
(−24)
13
(−11)
30
(−1)
32
(0)
32
(0)
10
(−12)
−10
(−23)
−30
(−34)
−43
(−42)
−45
(−43)
Average precipitation inches (mm) 0.48
(12)
0.52
(13)
0.84
(21)
1.34
(34)
2.50
(64)
3.36
(85)
3.07
(78)
2.50
(64)
1.72
(44)
1.43
(36)
0.69
(18)
0.60
(15)
19.05
(484)
Average snowfall inches (cm) 8.9
(23)
7.5
(19)
8.5
(22)
4.6
(12)
0.4
(1.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
2.5
(6.4)
8.0
(20)
10.1
(26)
50.5
(128)
Average extreme snow depth inches (cm) 8.0
(20)
7.0
(18)
5.8
(15)
3.5
(8.9)
0.2
(0.51)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
1.3
(3.3)
4.4
(11)
6.3
(16)
11.5
(29)
Average precipitation days (≥ 0.01 in) 7.8 7.9 7.5 8.1 10.4 11.6 9.7 8.0 7.3 7.2 6.6 7.7 99.8
Average snowy days (≥ 0.1 in) 9.9 8.7 6.3 2.7 0.4 0.0 0.0 0.0 0.0 2.5 8.0 10.1 44.6
Average relative humidity (%) 71.3 72.4 69.9 61.8 60.1 65.0 61.8 60.6 63.7 63.8 72.0 74.5 66.4
Average dew point °F (°C) 2.3
(−16.5)
8.6
(−13.0)
18.9
(−7.3)
28.6
(−1.9)
39.6
(4.2)
50.5
(10.3)
54.9
(12.7)
52.0
(11.1)
42.4
(5.8)
32.2
(0.1)
19.8
(−6.8)
7.5
(−13.6)
29.8
(−1.2)
Mean monthly sunshine hours 149.4 153.5 222.3 244.3 296.1 318.1 354.6 316.2 245.9 191.7 122.6 122.9 2,737.6
Percent possible sunshine 53 53 60 60 64 67 74 72 65 57 43 46 61
Average ultraviolet index 0.8 1.5 2.9 4.7 6.3 7.5 7.9 6.7 4.6 2.4 1.1 0.8 3.9
Source 1: NOAA (relative humidity and sun 1961–1990)[1][2][3]
Source 2: UV Index Today (1995 to 2022)[4]
  1. ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
  2. ^ Records for Bismarck have been kept at the Bismarck Municipal Airport since January 1948 and at an undisclosed location from October 1874 to December 1947.
  1. ^ "NOWData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved September 16, 2021.
  2. ^ "Station Name: ND BISMARCK". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved June 5, 2021.
  3. ^ "WMO Climate Normals for BISMARCK/MUNICIPAL, ND 1961–1990". National Oceanic and Atmospheric Administration. Retrieved March 10, 2014.
  4. ^ "Historical UV Index Data - Bismarck, ND". UV Index Today. Retrieved April 22, 2023.