First and last freeze dates in Lewiston, ID
The first freeze of fall (a low of 32°F or colder) typically comes around Oct 25, and the last freeze of spring around Apr 11.
This fall so far (data through Oct 16, 2026): first freeze (32°F or colder) Oct 13 at this station. Observed data, can lag a day or two.
Oct 25Median first fall freeze (≤32°F)
Apr 11Median last spring freeze (≤32°F)
196Median freeze-free days between
First and last freeze dates in Lewiston
| Threshold | Event | Median date | Typical range (10th–90th pct) | Earliest / latest | Years with one |
|---|---|---|---|---|---|
| 32°F or colder (freeze) | First in fall | Oct 25 | Oct 11 – Nov 9 | Sep 23 (2000) / Nov 16 (2016) | 100% |
| 32°F or colder (freeze) | Last in spring | Apr 11 | Mar 27 – Apr 25 | – | 100% |
| 28°F or colder (hard freeze) | First in fall | Nov 4 | Oct 20 – Nov 29 | Oct 10 (2009) / Dec 20 (1999) | 100% |
| 28°F or colder (hard freeze) | Last in spring | Mar 16 | Feb 26 – Apr 11 | – | 100% |
Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.
The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 196 days.
Nearby weather stations
Source station: Lewiston Ap (USW00024149), elevation 1,430 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.
Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Idaho (on our sister site PlugVsPump, from EIA prices).