Mount Rainier, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Rainier, a city in Prince George's County, Maryland.
Today
71°F
Mostly Sunny
Mostly sunny, with a high near 71. South wind around 7 mph.
7-day forecast for Mount Rainier
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Mostly Sunny | 7 mph S | 2% |
| Tonight | 52°F | Mostly Clear then Patchy Fog | 0 to 5 mph S | 2% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 1 to 8 mph S | 3% |
| Wednesday Night | 60°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph S | 18% |
| Thursday | 75°F | Chance Light Rain | 6 to 9 mph S | 49% |
| Thursday Night | 61°F | Light Rain Likely | 5 mph S | 71% |
| Friday | 72°F | Light Rain | 6 mph SW | 76% |
| Friday Night | 53°F | Light Rain Likely | 3 mph NW | 68% |
| Saturday | 69°F | Slight Chance Light Rain then Mostly Sunny | 7 mph NW | 15% |
| Saturday Night | 46°F | Partly Cloudy | 5 mph NW | 11% |
| Sunday | 64°F | Mostly Sunny | 6 mph NW | 8% |
| Sunday Night | 45°F | Chance Light Rain | 2 to 6 mph NW | 26% |
| Monday | 61°F | Chance Light Rain | 6 to 13 mph NW | 26% |
| Monday Night | 43°F | Slight Chance Light Rain | 6 to 9 mph NW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Mount Rainier (38.942, -76.965). Updated through the day.
Growing snapshot for Mount Rainier
Last spring frost
Mar 29
First fall frost
Nov 8
Growing season
224 days
Hardiness zone
7b
More local growing data for Mount Rainier: nearby ZIP 20712 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Natl Arboretum Dc, Md (2 mi from Mount Rainier). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.