Mainville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mainville, a community in Columbia County, Pennsylvania.
This Afternoon
68°F
Partly Sunny
Partly sunny, with a high near 68. Southwest wind around 1 mph.
7-day forecast for Mainville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Partly Sunny | 1 mph SW | 2% |
| Tonight | 50°F | Mostly Clear then Patchy Fog | 1 mph SE | 2% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 1 to 6 mph S | 2% |
| Wednesday Night | 60°F | Mostly Cloudy then Rain Showers Likely | 6 mph S | 66% |
| Thursday | 71°F | Rain Showers | 3 to 7 mph S | 91% |
| Thursday Night | 57°F | Chance Rain Showers | 2 mph SW | 47% |
| Friday | 68°F | Chance Rain Showers | 1 mph N | 47% |
| Friday Night | 47°F | Chance Rain Showers | 1 mph N | 45% |
| Saturday | 61°F | Slight Chance Rain Showers | 1 to 5 mph NW | 18% |
| Saturday Night | 39°F | Slight Chance Rain Showers then Partly Cloudy | 3 mph NW | 18% |
| Sunday | 58°F | Mostly Sunny | 5 mph W | 6% |
| Sunday Night | 35°F | Slight Chance Rain Showers | 3 mph W | 17% |
| Monday | 58°F | Slight Chance Rain Showers | 5 to 8 mph W | 24% |
| Monday Night | 35°F | Slight Chance Rain Showers | 5 mph W | 24% |
Forecast source: National Weather Service (api.weather.gov) for Mainville (40.983, -76.370). Updated through the day.
Growing snapshot for Mainville
Last spring frost
Apr 27
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
6b
More local growing data for Mainville: nearby ZIP 17815 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Bear Gap, Pa (14.4 mi from Mainville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.