Mars, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mars, a borough in Butler County, Pennsylvania.
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 71 in the afternoon. South wind 1 to 7 mph.
7-day forecast for Mars
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 1 to 7 mph S | 1% |
| Tonight | 52°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 76°F | Partly Sunny | 5 to 9 mph SE | 9% |
| Wednesday Night | 60°F | Light Rain | 10 mph S | 100% |
| Thursday | 70°F | Chance Light Rain then Mostly Sunny | 7 to 13 mph SW | 31% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 5 mph SW | 3% |
| Friday | 64°F | Partly Sunny | 0 to 6 mph W | 12% |
| Friday Night | 43°F | Chance Light Rain | 2 to 6 mph NW | 29% |
| Saturday | 55°F | Chance Light Rain | 6 to 12 mph W | 30% |
| Saturday Night | 35°F | Chance Light Rain then Mostly Cloudy | 3 to 8 mph W | 28% |
| Sunday | 55°F | Partly Sunny then Slight Chance Light Rain | 3 to 10 mph W | 16% |
| Sunday Night | 33°F | Slight Chance Light Rain | 9 mph W | 20% |
| Monday | 56°F | Chance Light Rain | 9 to 14 mph W | 30% |
| Monday Night | 35°F | Chance Light Rain then Partly Cloudy | 7 to 12 mph SW | 30% |
Forecast source: National Weather Service (api.weather.gov) for Mars (40.697, -80.014). Updated through the day.
Growing snapshot for Mars
Last spring frost
May 7
First fall frost
Oct 14
Growing season
159 days
Hardiness zone
6b
More local growing data for Mars: nearby ZIP 16046 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Barkeyville
Boyers
Bruin
Butler
Callery
Cherry Valley
Chicora
Connoquenessing
East Butler
Eau Claire
Evans City
Fairview
Fenelton
Forestville
Harlansburg
Harmony
Harrisville
Homeacre-Lyndora
Karns City
Lake Arthur Estates
Meadowood
Meridian
Nixon
North Washington
Oak Hills
Petrolia
Portersville
Prospect
Renfrew
Saxonburg
Climate data from the nearest NOAA station, Butler 2 Sw, Pa (11.1 mi from Mars). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.