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Capitol, MT

71°F
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71°
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Capitol, MT Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

August

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
26
104°
68°
27
98°
67°
28
101°
66°
29
Breezy; a strong p.m. t-storm
99°
67°
30
Partly sunny and not as hot
86°
59°
31
A couple of p.m. t-showers
94°
64°
1
Mostly sunny and hot
101°
69°
2
Hot; breezy in the afternoon
100°
60°
3
Sunny, windy and not as hot
88°
50°
4
Breezy; a few morning showers
84°
52°
5
Partial sunshine
88°
61°
6
A shower and thunderstorm
97°
60°
7
A strong thunderstorm; warm
93°
60°
8
Sunny to partly cloudy
91°
61°
9
A t-storm around in the a.m.
94°
62°
10
Partly sunny and very warm
94°
60°
11
Increasing amounts of sun
88°
56°
12
Sunshine
83°
57°
13
Mostly sunny
82°
58°
14
Mostly sunny
91°
61°
15
Becoming cloudy and very warm
92°
61°
16
Decreasing clouds and warm
92°
60°
17
Partly sunny and not as warm
82°
59°
18
A little rain in the morning
86°
59°
19
Partly sunny
89°
60°
20
Cloudy and very warm
90°
59°
21
Cloudy and not as warm
80°
58°
22
Mostly cloudy
80°
57°
23
Cloudy
78°
54°
24
Clouds and sun
77°
56°
25
Considerable cloudiness
79°
55°
26
Decreasing clouds
79°
56°
27
Mostly cloudy
84°
57°
28
Cloudy
80°
57°
29
Partly sunny
81°
56°
30
Mostly cloudy
83°
56°
31
Mostly cloudy
82°
55°
1
Mostly sunny
77°
51°
2
Mostly sunny
77°
53°
3
Some sun
86°
55°
4
Thickening clouds
87°
55°
5
Mainly cloudy
86°
56°

Temperature Graph

°F
110° 96° 82° 68° 54° Aug
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

August Weather in Capitol

Capitol's August 2026 forecast shows daily high temperatures ranging from 77° to 101°, with overnight lows between 50° and 69°. The average high for August is 87° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Capitol. See also: September | October | November.

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