Weather in Gaithersburg, Maryland, United States
Historical monthly conditions · 2021–2025
Monthly averages
Average daily air-temperature lows/highs and peak wind gusts. Rain is the average monthly total.
| Month | Avg low | Avg high | Rain | Cloud cover | Avg peak gust |
|---|---|---|---|---|---|
| January | -2°C | 6°C | 89.5 mm | 57% | 41.3 km/h |
| February | 0°C | 9°C | 79.9 mm | 58% | 41.8 km/h |
| March | 4°C | 14°C | 78.9 mm | 51% | 44.2 km/h |
| April | 8°C | 19°C | 76.0 mm | 58% | 41.6 km/h |
| May | 13°C | 23°C | 113.8 mm | 64% | 35.2 km/h |
| June | 18°C | 29°C | 107.4 mm | 57% | 33.8 km/h |
| July | 22°C | 31°C | 124.0 mm | 58% | 30.9 km/h |
| August | 20°C | 30°C | 90.0 mm | 55% | 30.4 km/h |
| September | 16°C | 26°C | 108.7 mm | 55% | 31.7 km/h |
| October | 10°C | 20°C | 61.1 mm | 46% | 34.9 km/h |
| November | 4°C | 14°C | 56.9 mm | 47% | 38.4 km/h |
| December | 0°C | 8°C | 100.5 mm | 59% | 37.0 km/h |
Weather match by month
Feels like 15°C–30°C · cloud ≤60% · rain ≤0.1 mm/h · gust ≤50 km/h
Feels-like temperature accounts for humidity and wind in shade. Percentages cover 08:00–20:00 local solar time.
| Month | Match rate | |
|---|---|---|
| January | <0.1% | |
| February | 0.7% | |
| March | 3.6% | |
| April | 15.4% | |
| May | 25.4% | |
| June | 26.4% | |
| July | 14.7% | |
| August | 26.8% | |
| September | 40.3% | |
| October | 25.9% | |
| November | 8.8% | |
| December | 0.0% |
About this location and data
- Urban-centre population
- 274,439
- Elevation
- 131 m
- Coordinates
- 39.15°N, 77.22°W
- Urban area
- 120 km²
Weather averages use 2 ERA5 grid cells, weighted by the area of the urban centre in each cell.
2021-2025 recent-weather sample (not a 30-year normal).
How the weather scores are calculatedNearby places with higher scores
Annual results for the default weather criteria: