Jamestown, North Dakota Climate

United States

Pop. 15,422 Elev. 427 m / 1,401 ft TZ: America/Chicago (UTC-5) ·

Winters in Jamestown are severe, with temperatures dropping to -1°F (-18°C) in February, while summers bring mild highs of 80°F (27°C) in July. Wind chill can push winter lows to -14°F (-26°C). Expect around 28 rainy days annually (21.2 in / 538 mm total), with snow on 6 days and 39 in (987 mm) of annual accumulation. The city averages 118 sunny days per year and around 20 thunderstorm days. Nearby lake water reaches 73°F (23°C) in summer.

Temperature 80°F (27°C) high -1°F (-19°C) low
Feels like 84°F (29°C) high -14°F (-25°C) low
Rain 28 days 21.2 in (538 mm) /yr
Snow 6 days 38.9 in (987 mm) /yr
Sky 118 sunny 20 stormy
Wind 3.0 mph (1.3 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Sep

Sky & Air by Month

Cloud cover (%)
70
Jan
52
Feb
62
Mar
59
Apr
43
May
58
Jun
48
Jul
42
Aug
46
Sep
49
Oct
58
Nov
74
Dec
Humidity (%)
77
Jan
73
Feb
60
Mar
61
Apr
52
May
69
Jun
73
Jul
77
Aug
73
Sep
72
Oct
72
Nov
83
Dec

Weather Days by Month

↓ Weather days table

Water Temperatures

↓ Water temperatures table

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Nearby Cities

Nearby

Commercial airport 2 mi Jamestown Regional Airport (JMS)
Ski resort 45 mi Bears Den Mountain
National park 81 mi Sand Lake National Wildlife Refuge
Mountain peak (20,733 ft) 151 mi Norris Hill
Hospital 2 mi North Dakota State Hospital
Hiking trail 20 mi North Country National Scenic Trail (ND)

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 19°F -7°C 1°F -17°C 0.0 in 0 mm 5.4 in136 mm 3
February 16°F -9°C -1°F -19°C 0.0 in 0 mm 4.9 in125 mm 10
March 45°F 7°C 23°F -5°C 0.2 in 5 mm 2.6 in67 mm 8
April 55°F 13°C 33°F 1°C 2.7 in 68 mm 9.8 in249 mm 9
May 71°F 22°C 46°F 8°C 3.2 in 81 mm 16
June 76°F 24°C 54°F 12°C 2.8 in 71 mm 7
July 80°F 27°C 61°F 16°C 4.7 in 119 mm 12
August 78°F 26°C 58°F 14°C 2.7 in 69 mm 16
September 75°F 24°C 53°F 12°C 1.8 in 44 mm 14
October 60°F 16°C 42°F 6°C 2.7 in 68 mm 14
November 42°F 6°C 26°F -3°C 0.3 in 7 mm 7.0 in177 mm 7
December 26°F -3°C 4°F -16°C 0.2 in 5 mm 9.1 in232 mm 2

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 3 0
February 10 0
March 8 0
April 9 1
May 16 2
June 7 3
July 12 6
August 16 5
September 14 2
October 14 1
November 7 0
December 2 0

Water Temperatures Data

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Month Lake Avg High
January 32°F 0°C
February 32°F 0°C
March 32°F 0°C
April 37°F 3°C
May 55°F 13°C
June 65°F 18°C
July 73°F 23°C
August 70°F 21°C
September 64°F 18°C
October 52°F 11°C
November 36°F 2°C
December 32°F 0°C