Sidney, Montana Climate

United States

Pop. 6,828 Elev. 591 m / 1,939 ft TZ: America/Denver (UTC-6) ·

Sidney experiences a wide climate range, from bitterly cold winters of -1°F (-18°C) in February to warm summers reaching 85°F (29°C) in July. Wind chill can push winter lows to -10°F (-23°C). Precipitation occurs on roughly 18 days per year (16.2 in / 412 mm total), with snow on 2 days and 32 in (819 mm) of annual accumulation. The city averages 126 sunny days per year.

Temperature 85°F (29°C) high -1°F (-18°C) low
Feels like 88°F (31°C) high -10°F (-23°C) low
Rain 18 days 16.2 in (412 mm) /yr
Snow 2 days 32.3 in (819 mm) /yr
Sky 126 sunny 9 stormy
Wind 2.7 mph (1.2 m/s) avg

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Monthly Climate Chart

↓ Monthly data table
Best months to visit: Sep, Oct

Sky & Air by Month

Cloud cover (%)
61
Jan
59
Feb
68
Mar
56
Apr
48
May
51
Jun
50
Jul
40
Aug
35
Sep
42
Oct
61
Nov
73
Dec
Humidity (%)
67
Jan
69
Feb
64
Mar
54
Apr
51
May
53
Jun
57
Jul
59
Aug
57
Sep
59
Oct
70
Nov
78
Dec

Weather Days by Month

↓ Weather days table

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Nearby Cities

Nearby

Commercial airport 2 mi Sidney - Richland Regional Airport (SDY)
Ski resort 211 mi Mission Ridge Winter Park
National park 150 mi Wood Mountain Post Provincial Historic Park
Mountain peak (5,112 ft) 218 mi
Hospital 1 mi Sidney Health Center
Hiking trail 41 mi Long X Trail

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Monthly Weather Data

↑ See chart
Month Avg High Avg Low Rainfall Snowfall Sunny Days
January 26°F -3°C 9°F -13°C 0.1 in 2 mm 4.7 in118 mm 5
February 17°F -8°C -1°F -18°C 0.1 in 3 mm 4.8 in123 mm 7
March 50°F 10°C 27°F -3°C 0.3 in 8 mm 2.5 in62 mm 3
April 59°F 15°C 33°F 0°C 1.4 in 37 mm 0.8 in20 mm 9
May 71°F 21°C 45°F 7°C 3.5 in 88 mm 16
June 78°F 26°C 53°F 12°C 2.3 in 59 mm 13
July 85°F 29°C 59°F 15°C 3.6 in 91 mm 12
August 84°F 29°C 58°F 15°C 2.0 in 52 mm 17
September 79°F 26°C 52°F 11°C 0.9 in 22 mm 18
October 63°F 17°C 39°F 4°C 1.5 in 38 mm 0.1 in2 mm 17
November 45°F 7°C 26°F -3°C 0.3 in 7 mm 8.1 in206 mm 6
December 30°F -1°C 9°F -13°C 0.3 in 7 mm 11.3 in288 mm 3

Weather Days by Month

↑ See chart
Month Sunny Days Storm Days
January 5 0
February 7 0
March 3 0
April 9 1
May 16 0
June 13 1
July 12 3
August 17 3
September 18 1
October 17 0
November 6 0
December 3 0