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Sidney, MT

64°F
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Sidney

Montana

64°
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Sidney, MT Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center

Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

October

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
27
Partly sunny
64°
40°
28
Partly sunny
65°
41°
29
Cloudy
63°
45°
30
Partial sunshine
72°
43°
1
Partly sunny
73°
45°
2
Mostly sunny
72°
46°
3
Mostly sunny
75°
44°
4
Warm with plenty of sunshine
76°
42°
5
Mostly sunny
70°
31°
6
Windy and cooler with rain
61°
30°
7
Cloudy with a little rain
57°
30°
8
Cloudy
54°
26°
9
Remaining cloudy
54°
27°
10
Sunshine and a few clouds
55°
26°
11
Mostly cloudy
53°
27°
12
Partial sunshine
54°
37°
13
Mostly sunny
60°
40°
14
Partly sunny
64°
36°
15
Partly sunny
66°
38°
16
Mostly sunny
63°
40°
17
Times of clouds and sun
62°
38°
18
Overcast with a touch of rain
59°
37°
19
Partly sunny
64°
38°
20
Times of clouds and sun
63°
37°
21
Plenty of sun
62°
38°
22
A p.m. shower in places
63°
33°
23
Cloudy with a touch of rain
58°
31°
24
Partly sunny
50°
27°
25
Times of clouds and sun
56°
21°
26
Hist. Avg.
53°
29°
27
Hist. Avg.
53°
29°
28
Hist. Avg.
52°
29°
29
Hist. Avg.
52°
28°
30
Hist. Avg.
51°
28°
31
Hist. Avg.
50°
27°

Temperature Graph

°F
80° 68° 56° 44° 32° Oct
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 *26 *27 *28 *29 *30 *31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable

October Weather in Sidney

Sidney's October 2026 forecast shows daily high temperatures ranging from 50° to 76°, with overnight lows between 21° and 46°. The average high for October is 62° with an average low of 36°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sidney. See also: November | December | January.

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World North America United States Montana Sidney

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