Rockville, MD Weather & Climate Normals
Rockville's real weather, in one number
Rockville, MD scores 51/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Rockville's hottest and coldest months
Rockville's hottest month is Jul, averaging 78°F; its coldest is Jan, averaging 35°F, a 43.3°F swing across the year, a middling gap by national standards.
Rockville's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 42°F | 27°F | 3.11in |
| Feb | 45°F | 28°F | 2.6in |
| Mar | 54°F | 36°F | 3.66in |
| Apr | 66°F | 46°F | 3.23in |
| May | 74°F | 55°F | 3.55in |
| Jun | 82°F | 64°F | 3.96in |
| Jul | 87°F | 69°F | 3.98in |
| Aug | 85°F | 67°F | 3.05in |
| Sep | 78°F | 60°F | 4.01in |
| Oct | 66°F | 48°F | 3.52in |
| Nov | 56°F | 38°F | 3.27in |
| Dec | 46°F | 31°F | 3.38in |
Apr, May, Jun, Sep, and Oct are the best time to see Rockville at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Rockville
Over a typical year, Rockville sees about 41.32in of precipitation a year across roughly 113 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Rockville ranks
Rockville ranks 1439 of 4876 US cities in this dataset for comfort score, and 5 of 46 within MD. About 68,417 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Rockville 1 Ne, MD US, 1.2 miles from Rockville, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated