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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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 Sep 19, 2026.