Lewiston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewiston, a city in Winona County, Minnesota.
Today
75°F
Mostly Cloudy then Isolated Rain Showers
Isolated rain showers after 4pm. Mostly cloudy. High near 75, with temperatures falling to around 72 in the afternoon. West wind 8 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Lewiston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Cloudy then Isolated Rain Showers | 8 to 12 mph W | 24% |
| Tonight | 57°F | Scattered Rain Showers then Mostly Cloudy | 7 mph W | 29% |
| Wednesday | 75°F | Mostly Sunny | 5 mph NW | 1% |
| Wednesday Night | 55°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 80°F | Sunny | 3 to 8 mph SW | 0% |
| Thursday Night | 60°F | Mostly Clear | 8 mph S | 1% |
| Friday | 82°F | Sunny | 8 to 13 mph SW | 9% |
| Friday Night | 64°F | Slight Chance Rain Showers | 12 mph SW | 17% |
| Saturday | 83°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph SW | 17% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 10 mph SW | 40% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 10 mph SW | 40% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 5 to 8 mph SE | 39% |
| Monday | 81°F | Chance Rain Showers | 8 mph E | 39% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 7 mph N | 26% |
Forecast source: National Weather Service (api.weather.gov) for Lewiston (43.982, -91.869). Updated through the day.
Growing snapshot for Lewiston
Last spring frost
May 8
First fall frost
Oct 3
Growing season
147 days
Hardiness zone
4b
More local growing data for Lewiston: nearby ZIP 55952 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Altura
Elba
Goodview
Homer
Minneiska
Minnesota City
Pickwick
Rollingstone
St. Charles
Stockton
Utica
Winona
Climate data from the nearest NOAA station, Rushford, Mn (10.7 mi from Lewiston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.