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Firth ID Weather - Clear - 56°F
Clear
56°F
Updated 3:50 am
Feels Like 49°F
Humidity 52%
Wind S 6 mph
Barometer  30 in
Dew Point 39°F
Firth ID Weather - Clear - 13°C
Clear
13°C
Updated 3:50 am
Feels Like 9°C
Humidity 52%
Wind S 10 km/h
Barometer  101.6 kPa
Dew Point 4°C
Firth, ID Weather and Current Conditionsfirth id weather forecast

Firth, ID Weather Forecast

Firth Idaho WeatherFirth, Idaho Weather Weather Forecast
14 Day API Firth, ID Weather Forecast. Note: Our 7 day Firth, Idaho weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Firth, ID Weather Forecast Dated: 350 AM Sat Sep 12 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Saturday, September 12, 2026

Mid-Morning
Firth Weather - 2026-09-12 - Morning - Overcast
55°F 13°C
Overcast
Mid-Afternoon
Firth Weather - 2026-09-12 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Firth Weather - 2026-09-12 - Evening - Overcast
75°F 24°C
Overcast
Warm and summery near 84°F 29°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds turning from the NNE to the ESE at 9 mph 14 km/h.

Sunday, September 13, 2026

Mid-Morning
Firth Weather - 2026-09-13 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-13 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Firth Weather - 2026-09-13 - Evening - Sunny
63°F 18°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds blowing from the WSW at 19 mph 31 km/h.

Monday, September 14, 2026

Mid-Morning
Firth Weather - 2026-09-14 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-14 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Firth Weather - 2026-09-14 - Evening - Sunny
61°F 16°C
Sunny
Enjoyable around 68°F 20°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds decreasing from SW 18 mph 29 km/h to S 9 mph 14 km/h.

Tuesday, September 15, 2026

Mid-Morning
Firth Weather - 2026-09-15 - Morning - Sunny
54°F 12°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-15 - Afternoon - Sunny
78°F 25°C
Sunny
Early-Evening
Firth Weather - 2026-09-15 - Evening - Overcast
69°F 21°C
Overcast
Mild temperatures up to 78°F 25°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds swinging from the NE to the S at 9 mph 14 km/h.

Wednesday, September 16, 2026

Mid-Morning
Firth Weather - 2026-09-16 - Morning - Partly Cloudy
57°F 14°C
Partly Cloudy
Mid-Afternoon
Firth Weather - 2026-09-16 - Afternoon - Partly Cloudy
73°F 23°C
Partly Cloudy
Early-Evening
Firth Weather - 2026-09-16 - Evening - Sunny
61°F 16°C
Sunny
Mild with a high of 73°F 23°C, partly cloudy through the afternoon, turning sunny this evening, with steady humidity and steady pressure. Winds shifting from the SW to the NNW at 11 mph 18 km/h. Gusts up to 21 mph 34 km/h.

Thursday, September 17, 2026

Mid-Morning
Firth Weather - 2026-09-17 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-17 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Firth Weather - 2026-09-17 - Evening - Sunny
65°F 18°C
Sunny
Pleasant near 70°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Friday, September 18, 2026

Mid-Morning
Firth Weather - 2026-09-18 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-18 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Firth Weather - 2026-09-18 - Evening - Sunny
70°F 22°C
Sunny
Comfortable with temperatures reaching 79°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the NE to the E at 6 mph 9 km/h.

Saturday, September 19, 2026

Mid-Morning
Firth Weather - 2026-09-19 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-19 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Firth Weather - 2026-09-19 - Evening - Sunny
73°F 23°C
Sunny
Quite warm around 84°F 29°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Firth Weather - 2026-09-20 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-20 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Firth Weather - 2026-09-20 - Evening - Sunny
78°F 26°C
Sunny
Warm temperatures up to 88°F 31°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling.

Monday, September 21, 2026

Mid-Morning
Firth Weather - 2026-09-21 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-21 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Firth Weather - 2026-09-21 - Evening - Sunny
77°F 25°C
Sunny
Very warm with a high of 88°F 31°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds picking up from SSW at 3 mph 5 km/h to SSW at 14 mph 22 km/h.

Tuesday, September 22, 2026

Mid-Morning
Firth Weather - 2026-09-22 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-22 - Afternoon - Sunny
85°F 30°C
Sunny
Early-Evening
Firth Weather - 2026-09-22 - Evening - Sunny
76°F 25°C
Sunny
Warm and summery near 85°F 30°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds building from SSE at 1 mph 1 km/h to SSE at 9 mph 14 km/h.

Wednesday, September 23, 2026

Mid-Morning
Firth Weather - 2026-09-23 - Morning - Sunny
65°F 18°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-23 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Firth Weather - 2026-09-23 - Evening - Sunny
78°F 26°C
Sunny
Balmy with temperatures reaching 88°F 31°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds swinging from the NE to the SSE at 9 mph 13 km/h.

Thursday, September 24, 2026

Mid-Morning
Firth Weather - 2026-09-24 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Firth Weather - 2026-09-24 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
Firth Weather - 2026-09-24 - Evening - Overcast
79°F 26°C
Overcast
Sizzling hot with 90°F 32°C, sunny through the afternoon, turning overcast this evening, with steady humidity and barometric pressure falling. Winds picking up from SSE at 2 mph 3 km/h to S at 11 mph 19 km/h.

Friday, September 25, 2026

Mid-Morning
Firth Weather - 2026-09-25 - Morning - Cloudy
62°F 17°C
Cloudy
Mid-Afternoon
Firth Weather - 2026-09-25 - Afternoon - Scattered Showers
80°F 27°C
Scattered Showers
Early-Evening
Firth Weather - 2026-09-25 - Evening - Light Showers
67°F 20°C
Light Showers
Warm temperatures up to 80°F 27°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds turning from the NW to the NE at 9 mph 15 km/h.

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Weather by the Numbers

Sat, 12th
Firth ID Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 85°F 29°C
Lo: 47°F 9°C
Sunrise 07:05 AM
Sunset 07:44 PM
Wind NW 4 mph6 km/h
Dew Point 31°F-1°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 9% *
Humidity 18%
Sun, 13th
Firth ID Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 75°F 24°C
Lo: 53°F 12°C
Sunrise 07:06 AM
Sunset 07:42 PM
Wind SW 17 mph27 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 0% *
Humidity 24%
Mon, 14th
Firth ID Weather - Monday, Sep 14, 2026 - Sunny
Hi: 69°F 21°C
Lo: 46°F 8°C
Sunrise 07:07 AM
Sunset 07:40 PM
Wind WSW 16 mph26 km/h
Dew Point 30°F-1°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Tue, 15th
Firth ID Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 79°F 26°C
Lo: 44°F 7°C
Sunrise 07:08 AM
Sunset 07:39 PM
Wind W 5 mph9 km/h
Dew Point 22°F-6°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 17%
Wed, 16th
Firth ID Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 73°F 23°C
Lo: 45°F 7°C
Sunrise 07:09 AM
Sunset 07:37 PM
Wind SW 15 mph24 km/h
Dew Point 29°F-2°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 8% *
Humidity 25%
Thu, 17th
Firth ID Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 71°F 22°C
Lo: 42°F 6°C
Sunrise 07:11 AM
Sunset 07:35 PM
Wind NW 3 mph5 km/h
Dew Point 35°F2°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 34%
Fri, 18th
Firth ID Weather - Friday, Sep 18, 2026 - Sunny
Hi: 79°F 26°C
Lo: 48°F 9°C
Sunrise 07:12 AM
Sunset 07:33 PM
Wind NW 4 mph6 km/h
Dew Point 26°F-4°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 0% *
Humidity 17%
Sat, 19th
Firth ID Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 84°F 29°C
Lo: 51°F 10°C
Sunrise 07:13 AM
Sunset 07:31 PM
Wind NNW 4 mph7 km/h
Dew Point 19°F-7°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 12%
Sun, 20th
Firth ID Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 88°F 31°C
Lo: 54°F 12°C
Sunrise 07:14 AM
Sunset 07:29 PM
Wind NNW 4 mph7 km/h
Dew Point 14°F-10°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 8%
Mon, 21st
Firth ID Weather - Monday, Sep 21, 2026 - Sunny
Hi: 88°F 31°C
Lo: 56°F 13°C
Sunrise 07:15 AM
Sunset 07:28 PM
Wind WSW 11 mph18 km/h
Dew Point 20°F-7°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 11%
Tue, 22nd
Firth ID Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 85°F 30°C
Lo: 55°F 13°C
Sunrise 07:16 AM
Sunset 07:26 PM
Wind WSW 9 mph14 km/h
Dew Point 26°F-3°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 0% *
Humidity 15%
Wed, 23rd
Firth ID Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 88°F 31°C
Lo: 56°F 13°C
Sunrise 07:17 AM
Sunset 07:24 PM
Wind WSW 7 mph12 km/h
Dew Point 22°F-6°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 12%
Thu, 24th
Firth ID Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 90°F 32°C
Lo: 59°F 15°C
Sunrise 07:18 AM
Sunset 07:22 PM
Wind WSW 10 mph16 km/h
Dew Point 24°F-4°C
uv Index 7
Barometric Pressure 29.77 in1008 mb
POP 1% *
Humidity 11%
Fri, 25th
Firth ID Weather - Friday, Sep 25, 2026 - Cloudy
Hi: 80°F 27°C
Lo: 60°F 16°C
Sunrise 07:20 AM
Sunset 07:20 PM
Wind NE 6 mph9 km/h
Dew Point 51°F10°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 7% *
Humidity 49%
* POP = Probability of Precipitation. Data for 12:00 PM.