Mars, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mars, a borough in Butler County, Pennsylvania.
Today
85°F
Sunny
Sunny, with a high near 85. East wind around 3 mph.
7-day forecast for Mars
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 3 mph E | 0% |
| Tonight | 65°F | Mostly Clear | 5 mph E | 1% |
| Wednesday | 87°F | Partly Sunny then Scattered Showers And Thunderstorms | 5 mph SE | 37% |
| Wednesday Night | 67°F | Scattered Showers And Thunderstorms | 5 mph S | 50% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 67% |
| Thursday Night | 67°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 67% |
| Friday | 84°F | Showers And Thunderstorms | 3 to 7 mph SW | 83% |
| Friday Night | 66°F | Showers And Thunderstorms | 2 to 6 mph SW | 83% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 7 mph SW | 47% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 47% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 20% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 23% |
| Monday | 87°F | Chance Rain Showers | 7 to 10 mph SW | 37% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 48% |
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 Aug 4, 2026.