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
53°F
Mostly Clear
Mostly clear, with a low around 53. South wind around 3 mph.
7-day forecast for Chillum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Clear | 3 mph S | 1% |
| Wednesday | 75°F | Mostly Sunny | 3 to 9 mph S | 1% |
| Wednesday Night | 62°F | Mostly Cloudy then Chance Rain Showers | 6 mph S | 28% |
| Thursday | 75°F | Chance Rain Showers | 9 mph S | 43% |
| Thursday Night | 62°F | Rain Showers Likely | 2 to 7 mph SW | 59% |
| Friday | 71°F | Light Rain Likely | 5 mph N | 65% |
| Friday Night | 52°F | Chance Light Rain then Partly Cloudy | 2 to 7 mph NW | 39% |
| Saturday | 66°F | Mostly Sunny | 8 to 12 mph NW | 5% |
| Saturday Night | 44°F | Mostly Clear | 7 to 10 mph NW | 5% |
| Sunday | 62°F | Mostly Sunny | 6 to 10 mph NW | 2% |
| Sunday Night | 43°F | Mostly Clear | 7 mph W | 5% |
| Monday | 62°F | Sunny | 8 to 13 mph W | 5% |
| Monday Night | 41°F | Mostly Clear | 2 to 8 mph W | 5% |
| Tuesday | 65°F | Sunny | 5 to 9 mph W | 3% |
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 Nov 4, 2026.