Canyon County weather, town by town
8 places in Canyon County, Idaho, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1906 to 2026. Station extremes, not official state records.
Canyon County Weather Facts
Canyon County has 8 places on myweatherrock (8 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 115°F at Swan Falls Ph on August 6, 1990. The coldest night is -35°F at Parma Exp Stn on December 25, 1924. The wettest day brought 2.47 inches of rain at Emmett 2 E on September 14, 1959. The biggest single-day snow measured 19.02 inches at Emmett 2 E on February 2, 1916. Those are station measurements from NOAA's daily records, 1906 to 2026, not official state records. By area the largest place is Nampa, about 36 square miles.
About Canyon County weather
The map on the Now tab shows every Canyon County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 8 Canyon County towns with station normals, the warmest month is July, when the day usually reaches 93°F, and the coldest is December, when the night usually falls to 22°F. January is the wettest, with rain on about 8 days. July afternoons run from about 92°F in Middleton to 95°F in Melba. December nights run from about 20°F in Caldwell to 26°F in Melba.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Canyon County weather records
Measured at the NOAA stations serving these towns, daily records 1906 to 2026. Station extremes, not official state records.
Common questions about Canyon County weather
- What is the hottest temperature recorded at a Canyon County station?
- 115°F at Swan Falls Ph on August 6, 1990, in the NOAA daily station records myweatherrock holds (1906 to 2026).
- What is the coldest temperature recorded at a Canyon County station?
- -35°F at Parma Exp Stn on December 25, 1924.
- What is the most rain a Canyon County station has measured in one day?
- 2.47 inches at Emmett 2 E on September 14, 1959.
- What is the biggest one-day snowfall at a Canyon County station?
- 19.02 inches at Emmett 2 E on February 2, 1916.
- How many Canyon County towns have a weather page here?
- 8: 8 cities. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Canyon County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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