McSwain, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McSwain, a community in Merced County, California.
Overnight
64°F
Clear
Clear. Low around 64, with temperatures rising to around 67 overnight. Northwest wind around 5 mph.
7-day forecast for McSwain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 5 mph NW | 0% |
| Tuesday | 104°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 65°F | Clear | 5 to 10 mph WNW | 0% |
| Wednesday | 103°F | Sunny | 5 to 10 mph NW | 0% |
| Wednesday Night | 64°F | Clear | 5 to 10 mph NW | 0% |
| Thursday | 103°F | Sunny | 5 to 10 mph NW | 0% |
| Thursday Night | 65°F | Clear | 5 to 10 mph NW | 0% |
| Friday | 103°F | Sunny | 5 to 10 mph NW | 0% |
| Friday Night | 66°F | Clear | 5 to 10 mph NW | 0% |
| Saturday | 104°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 66°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Sunday | 103°F | Sunny | 5 to 10 mph WNW | 0% |
| Sunday Night | 63°F | Mostly Clear | 5 to 10 mph WNW | 0% |
| Monday | 99°F | Sunny | 5 to 10 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for McSwain (37.315, -120.587). Updated through the day.
Growing snapshot for McSwain
Last spring frost
Mar 3
First fall frost
Nov 24
Growing season
263 days
Hardiness zone
9a
More local growing data for McSwain: nearby ZIP 95301 weather · frost dates · planting calendar · California frost dates
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University of California-Merced
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Climate data from the nearest NOAA station, Merced, Ca (7.8 mi from McSwain). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.