Harman US

Mars, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mars, a borough in Butler County, Pennsylvania.

Today
77°F
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers before 11am. Mostly cloudy, with a high near 77. East wind around 6 mph. Chance of precipitation is 20%.

7-day forecast for Mars

WhenTempForecastWindPrecip
Today 77°F Slight Chance Rain Showers then Mostly Cloudy 6 mph E 17%
Tonight 62°F Showers And Thunderstorms Likely 6 mph SE 74%
Sunday 76°F Showers And Thunderstorms 6 to 9 mph SW 93%
Sunday Night 52°F Showers And Thunderstorms 10 mph N 77%
Monday 67°F Chance Rain Showers 12 mph NE 32%
Monday Night 51°F Rain Showers Likely 10 to 14 mph E 58%
Tuesday 62°F Rain Showers Likely 15 mph E 58%
Tuesday Night 49°F Rain Showers Likely 16 mph E 61%
Wednesday 61°F Rain Showers Likely 16 mph E 61%
Wednesday Night 49°F Showers And Thunderstorms Likely 12 to 15 mph E 62%
Thursday 65°F Rain Showers Likely 12 mph E 60%
Thursday Night 48°F Slight Chance Rain Showers 5 to 9 mph E 24%
Friday 68°F Slight Chance Rain Showers 8 mph NE 17%
Friday Night 48°F Slight Chance Rain Showers then Partly Cloudy 5 to 8 mph NE 17%

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

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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 Sep 19, 2026.