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Rupert, ID

55°F
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Rupert

Idaho

55°
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Rupert, ID 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

September

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
30
73°
50°
31
85°
44°
1
84°
56°
2
75°
55°
3
78°
53°
4
75°
46°
5
82°
45°
6
Times of clouds and sun
80°
51°
7
Mostly sunny
67°
42°
8
Nice with plenty of sunshine
74°
45°
9
Partly sunny and nice
77°
50°
10
Times of sun and clouds
84°
55°
11
A shower and thunderstorm
82°
51°
12
Mostly sunny
76°
49°
13
Decreasing clouds
72°
46°
14
Plenty of sun
79°
48°
15
A shower and thunderstorm
80°
50°
16
Plenty of sunshine
78°
49°
17
Partly sunny
80°
48°
18
A stray morning thundershower
79°
49°
19
Plenty of sunshine
84°
48°
20
A blend of sun and clouds
68°
43°
21
Cloudy with a bit of rain
78°
50°
22
Not as warm
67°
48°
23
Mostly sunny
67°
45°
24
Mostly sunny
71°
49°
25
More sunshine than clouds
74°
49°
26
Increasing cloudiness
75°
48°
27
Plenty of sunshine
71°
47°
28
Sunny
66°
40°
29
Mostly sunny
62°
35°
30
Plenty of sunshine
61°
35°
1
Plenty of sunshine
63°
41°
2
Plenty of sunshine
65°
40°
3
Plenty of sun
71°
43°

Temperature Graph

°F
90° 78° 66° 54° 42° Sep
Today 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
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

September Weather in Rupert

Rupert's September 2026 forecast shows daily high temperatures ranging from 61° to 84°, with overnight lows between 35° and 55°. The average high for September is 73° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Rupert. See also: October | November | December.

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World North America United States Idaho Rupert

Weather Near Rupert:

  • Idaho Falls, ID
  • Jerome, ID
  • Twin Falls, ID
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