Firth, ID Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Firth, ID.

Current Conditions — Firth, ID

IDAHO FALLS (KIDA)

Clear

55.4 F
Humidity:21%
Wind Speed:NE 12.7 G 18.4 mph
Barometer:30.16 in
Dewpoint:15.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 30 2026, 12:45 PM MDT
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5-Day Forecast — Firth, ID

Thursday

High 60 °F
Forecast Missing
Thursday
Night
Low 32 °F
Forecast Missing
Friday

High 66 °F
Forecast Missing
Friday
Night
Low 37 °F
Forecast Missing
Saturday

High 71 °F
Forecast Missing
Saturday
Night
Low 44 °F
Forecast Missing
Sunday

High 73 °F
Forecast Missing
Sunday
Night
Low 46 °F
Forecast Missing
Monday

High 69 °F
Forecast Missing

Detailed Forecast — Firth, ID

Thursday
Chance of Rain. High near 60°F. Wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Forecast Missing. Low around 32°F. Wind 5 to 8 mph, with gusts as high as 14 mph.
Friday
Forecast Missing. High near 66°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Friday Night
Forecast Missing. Low around 37°F. Wind 3 to 6 mph, with gusts as high as 8 mph.
Saturday
Forecast Missing. High near 71°F. Wind 3 to 8 mph, with gusts as high as 13 mph.
Saturday Night
Forecast Missing. Low around 44°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Sunday
Forecast Missing. High near 73°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Sunday Night
Forecast Missing. Low around 46°F. Wind around 5 mph, with gusts as high as 9 mph.
Monday
Forecast Missing. High near 69°F. Wind 6 to 9 mph, with gusts as high as 15 mph.
Monday Night
Forecast Missing. Low around 44°F. Wind 3 to 5 mph, with gusts as high as 8 mph.
Tuesday
Forecast Missing. High near 69°F. Wind 8 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Forecast Missing. Low around 42°F. Wind 5 to 9 mph, with gusts as high as 16 mph.
Wednesday
Forecast Missing. High near 68°F. Wind 9 to 10 mph, with gusts as high as 16 mph.
ID Radar
Current Radar • ID
Day 1 Outlook • April 30, 2026

Observation History — Firth, ID

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
12:45 PM MDT NE 12.7 G 18.4 10.00 Clear -- 55.4 15.8 21% NA NA 30.16 1021.3
12:40 PM MDT NE 17.3 10.00 Clear -- 57.2 15.8 19% NA NA 30.17 1021.7
12:30 PM MDT 18.4 G 24.2 10.00 Clear -- 55.4 15.8 21% NA NA 30.17 1021.7
12:20 PM MDT 17.3 G 28.8 10.00 Clear -- 55.4 17.6 22% NA NA 30.17 1021.7
12:15 PM MDT 17.3 10.00 Clear -- 55.4 15.8 21% NA NA 30.17 1021.7
12:05 PM MDT 16.1 G 24.2 10.00 Clear -- 53.6 14.0 20% NA NA 30.18 1022.0
12:00 PM MDT 15.0 10.00 Clear -- 53.6 14.0 20% NA NA 30.18 1022.0
11:50 AM MDT 16.1 G 27.6 10.00 Clear -- 53.6 15.8 22% NA NA 30.18 1022.0
11:45 AM MDT 17.3 10.00 Clear -- 55.4 15.8 21% NA NA 30.18 1022.0
11:35 AM MDT 16.1 10.00 Clear -- 53.6 14.0 20% NA NA 30.18 1022.0
11:20 AM MDT 16.1 10.00 Clear -- 53.6 15.8 22% NA NA 30.19 1022.4
11:10 AM MDT 17.3 10.00 Clear -- 53.6 17.6 24% NA NA 30.19 1022.4
11:00 AM MDT 17.3 10.00 Clear -- 51.8 % NA NA 30.19 1022.4
10:35 AM MDT NE 13.8 10.00 Clear -- 51.8 19.4 28% NA NA 30.20 1022.7
10:30 AM MDT 10.00 Clear -- 51.8 21.2 30% NA NA 30.20 1022.7
10:20 AM MDT NE 15.0 G 20.7 10.00 Clear -- 50.0 23.0 34% NA NA 30.20 1022.7
10:05 AM MDT NE 9.2 10.00 Clear -- 48.2 24.8 40% 44.1 NA 30.21 1023.0
10:00 AM MDT NE 12.7 10.00 Clear -- 48.2 24.8 40% 43.0 NA 30.21 1023.0
09:50 AM MDT 10.4 10.00 Clear -- 46.4 24.8 42% 41.4 NA 30.22 1023.4
09:45 AM MDT 12.7 10.00 Clear -- 46.4 24.8 42% 40.6 NA 30.22 1023.4
09:35 AM MDT 10.4 10.00 Clear -- 44.6 26.6 49% 39.2 NA 30.22 1023.4
09:20 AM MDT 12.7 10.00 Clear -- 44.6 26.6 49% 38.5 NA 30.22 1023.4
09:15 AM MDT 12.7 10.00 Clear -- 44.6 26.6 49% 38.5 NA 30.22 1023.4
08:53 AM MDT 12.8 10.00 Clear -- 41.0 27.0 57% 33.8 NA 30.22 1023.4

Regional Weather Observation

IDAHO FALLS (KIDA)

Clear
55.4 F

REXBURG (KRXE)

Clear
55.4 F

POCATELLO (KPIH)

Clear
57.2 F

DRIGGS REED MEM (KDIJ)

Mostly Cloudy
48.2 F

ALPINE (K46U)

Clear
46.4 F

JACKSON (KJAC)

Clear
46.4 F
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