Chillum, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chillum, a community in Prince George's County, Maryland.
Overnight
62°F
Mostly Clear
Mostly clear, with a low around 62. Northeast wind around 8 mph.
7-day forecast for Chillum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Clear | 8 mph NE | 0% |
| Saturday | 80°F | Mostly Sunny | 5 to 8 mph NE | 4% |
| Saturday Night | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 7 mph SE | 17% |
| Sunday | 85°F | Chance Rain Showers | 5 to 10 mph S | 25% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 9 mph W | 70% |
| Monday | 72°F | Chance Rain Showers | 9 mph NE | 31% |
| Monday Night | 58°F | Chance Rain Showers | 6 to 9 mph NE | 41% |
| Tuesday | 66°F | Rain Showers Likely | 10 to 14 mph NE | 55% |
| Tuesday Night | 55°F | Rain Showers Likely | 10 to 14 mph NE | 55% |
| Wednesday | 62°F | Chance Rain Showers | 15 mph NE | 45% |
| Wednesday Night | 55°F | Chance Rain Showers | 13 mph NE | 45% |
| Thursday | 63°F | Chance Rain Showers | 14 mph NE | 45% |
| Thursday Night | 53°F | Chance Rain Showers | 6 to 13 mph N | 37% |
| Friday | 68°F | Slight Chance Rain Showers | 10 mph N | 18% |
Forecast source: National Weather Service (api.weather.gov) for Chillum (38.967, -76.979). Updated through the day.
Growing snapshot for Chillum
Last spring frost
Mar 29
First fall frost
Nov 8
Growing season
224 days
Hardiness zone
7b
More local growing data for Chillum: nearby ZIP 20782 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Natl Arboretum Dc, Md (3.6 mi from Chillum). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.