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Severe weather to focus on central U.S. into the start of April. See the forecast. Chevron right

Triangle, ID

23°F
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Idaho

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Triangle, ID Weather
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Monthly

Air Quality Health & Activities

April

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
29
75°
35°
30
60°
42°
31
61°
34°
1
55°
35°
2
A couple of snow showers
33°
22°
3
Mostly sunny and not as cold
45°
28°
4
Plenty of sunshine
53°
36°
5
Partly sunny
59°
41°
6
Times of sun and clouds
61°
41°
7
A couple of p.m. t-showers
60°
34°
8
A bit of afternoon rain
52°
35°
9
Cloudy with showers around
48°
35°
10
Cloudy most of the time
45°
30°
11
A couple of afternoon showers
50°
33°
12
Plenty of sunshine
54°
36°
13
Abundant sunshine
56°
38°
14
Partly sunny
57°
40°
15
Decreasing clouds
50°
30°
16
Overcast
55°
35°
17
Cloudy
57°
38°
18
Partly sunny
57°
38°
19
Partly sunny
55°
36°
20
A shower in the morning
49°
31°
21
Increasing cloudiness
44°
26°
22
An afternoon shower
45°
29°
23
Partly sunny
45°
27°
24
Mostly cloudy
46°
28°
25
Cloudy
47°
37°
26
Decreasing clouds
57°
38°
27
Mostly sunny
49°
31°
28
Plenty of sunshine
49°
34°
29
Partly sunny
58°
40°
30
Clouds yielding to sun
59°
41°
1
Decreasing clouds
61°
41°
2
Plenty of sunshine
62°
42°

Temperature Graph

°F
70° 60° 50° 40° 30° Apr
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

April Weather in Triangle

Triangle's April 2026 forecast shows daily high temperatures ranging from 33° to 62°, with overnight lows between 22° and 42°. The average high for April is 52° with an average low of 35°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Triangle. See also: May | June | July.

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