Idaho City, ID Monthly Weather

Boise County1:29 PM MDT43.83°N, 115.83°WElevation 3,907 ft
← September

October 2026

Sun
Mon
Tue
Wed
Thu
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Sat
1
273°/45°
375°/45°
480°/48°
578°/52°
677°/49°
776°/49°
877°/49°
974°/51°0.10 in
1058°/35°
1141°/31°0.20 in
1244°/30°
1353°/31°
1457°/35°
1561°/32°
1667°/35°
1766°/41°
1865°/40°
19
20
21
22
23
24
25
26 Widespread Frost then Showers And Thunderstorms Likely 61°/25°
27 Patchy Fog then Slight Chance Rain Showers 52°/23°
28 Patchy Fog then Mostly Sunny 56°/24°
29 Mostly Sunny 62°/33°
30 Partly Sunny 58°/32°
31 Chance Rain Showers 58°/31°
Average high66°
Average low41°
Warmest / coldest80° / 30°
Precipitation0.30 in (normal 1.24 in to date)
Record high today65° (2003)
Record low today14° (2020)

Observed: Mores Creek Summit, 17 km away, records since 1982. Normals 1991–2020. Climate data from NOAA's Regional Climate Centers (ACIS); recent days are preliminary. Days ahead: the forecast.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather