Lewiston, UT Weather & Growing Conditions
This Afternoon
52°F
Mostly Sunny
Mostly sunny. High near 52, with temperatures falling to around 49 in the afternoon. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Mostly Sunny | 2 mph N | 0% |
| Tonight | 31°F | Mostly Cloudy then Patchy Fog | 3 mph ENE | 3% |
| Wednesday | 54°F | Patchy Fog then Partly Sunny | 2 mph N | 9% |
| Wednesday Night | 28°F | Areas Of Fog | 2 mph NNE | 6% |
| Thursday | 51°F | Areas Of Fog then Slight Chance Light Rain | 2 mph WSW | 20% |
| Thursday Night | 28°F | Slight Chance Light Rain then Areas Of Fog | 1 mph NE | 20% |
| Friday | 52°F | Areas Of Fog then Mostly Sunny | 2 mph WNW | 1% |
| Friday Night | 28°F | Partly Cloudy | 2 mph ESE | 1% |
| Saturday | 56°F | Sunny | 1 mph NW | 0% |
| Saturday Night | 31°F | Mostly Clear | 1 mph E | 0% |
| Sunday | 59°F | Sunny | 3 mph S | 0% |
| Sunday Night | 34°F | Partly Cloudy | 1 mph SE | 1% |
| Monday | 61°F | Mostly Sunny | 1 mph S | 1% |
| Monday Night | 35°F | Partly Cloudy | 1 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lewiston, UT
Last spring frost
May 11
First fall frost
Oct 5
Growing season
143 days
Hardiness zone
6a
Explore more for Lewiston, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, Richmond, Ut (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.