Middletown, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middletown, a community in Lake County, California.
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. Northwest wind around 3 mph.
7-day forecast for Middletown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 3 mph NW | 0% |
| Saturday | 91°F | Sunny | 2 to 9 mph NW | 0% |
| Saturday Night | 53°F | Partly Cloudy | 0 to 9 mph WSW | 0% |
| Sunday | 86°F | Partly Sunny | 0 to 8 mph SSE | 0% |
| Sunday Night | 52°F | Mostly Cloudy | 0 to 8 mph SSW | 0% |
| Monday | 88°F | Sunny | 0 to 9 mph SSW | 0% |
| Monday Night | 51°F | Mostly Clear | 0 to 9 mph W | 0% |
| Tuesday | 89°F | Sunny | 0 to 8 mph SSW | 0% |
| Tuesday Night | 53°F | Clear | 0 to 8 mph WNW | 0% |
| Wednesday | 93°F | Sunny | 0 to 7 mph E | 0% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 7 mph WNW | 0% |
| Thursday | 93°F | Sunny | 0 to 9 mph SSW | 0% |
| Thursday Night | 54°F | Mostly Clear | 0 to 9 mph W | 1% |
| Friday | 87°F | Mostly Sunny | 0 to 9 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Middletown (38.752, -122.622). Updated through the day.
Growing snapshot for Middletown
Last spring frost
Mar 2
First fall frost
Nov 23
Growing season
263 days
Hardiness zone
9a
More local growing data for Middletown: nearby ZIP 95461 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Lakeport
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Nice
North Lakeport
Soda Bay
Spring Valley
Upper Lake
Climate data from the nearest NOAA station, Calistoga, Ca (11.2 mi from Middletown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.