Gaithersburg, Maryland Climate
United States
Pop. 67,456 Elev. 153 m / 502 ft
TZ: America/New_York (UTC-4) ·
Summers in Gaithersburg are warm, with July highs around 88°F (31°C), while winters are cold with January lows of 24°F (-4°C). Humidity pushes the summer feels-like temperature to 104°F (40°C), while wind chill can drive winter lows to 17°F (-8°C). Expect around 62 rainy days annually (39.5 in / 1003 mm total), with snow on 4 days and 23 in (592 mm) of annual accumulation. The city averages 117 sunny days per year and around 43 thunderstorm days. Ocean water temperatures reach 86°F (30°C) in summer.
| Temperature | 88°F (31°C) high | 24°F (-4°C) low |
| Feels like | 104°F (40°C) high | 17°F (-8°C) low |
| Rain | 62 days | 39.5 in (1003 mm) /yr |
| Snow | 4 days | 23.3 in (592 mm) /yr |
| Sky | 117 sunny | 43 stormy |
| Wind | 2.3 mph (1.0 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Apr, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
41
Jan 55
Feb 46
Mar 68
Apr 75
May 61
Jun 62
Jul 52
Aug 60
Sep 46
Oct 50
Nov 61
Dec Humidity (%)
56
Jan 57
Feb 49
Mar 57
Apr 68
May 71
Jun 75
Jul 70
Aug 71
Sep 64
Oct 58
Nov 62
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 19 mi Washington Dulles International Airport (IAD)
Ski resort 33 mi Snow Riders
National park 11 mi Great Falls Park
Mountain peak
(4,928 ft) 288 mi Third Peak
Hospital 3 mi Adventist HealthCare Behavioral Health & Wellness Services
Hiking trail 4 mi Seneca Creek Greenway
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 37°F 3°C | 24°F -4°C | 0.6 in 16 mm | 12.4 in314 mm | 16 |
| February | 44°F 7°C | 30°F -1°C | 2.4 in 62 mm | 6.1 in154 mm | 10 |
| March | 61°F 16°C | 41°F 5°C | 1.8 in 47 mm | — | 13 |
| April | 68°F 20°C | 50°F 10°C | 3.2 in 82 mm | — | 5 |
| May | 73°F 23°C | 57°F 14°C | 8.2 in 209 mm | — | 3 |
| June | 85°F 29°C | 67°F 19°C | 5.2 in 131 mm | — | 10 |
| July | 88°F 31°C | 72°F 22°C | 8.1 in 207 mm | — | 8 |
| August | 81°F 27°C | 64°F 18°C | 1.5 in 39 mm | — | 13 |
| September | 79°F 26°C | 61°F 16°C | 2.6 in 66 mm | — | 8 |
| October | 67°F 20°C | 49°F 9°C | 2.4 in 60 mm | — | 12 |
| November | 56°F 13°C | 40°F 4°C | 1.7 in 42 mm | 0.2 in4 mm | 13 |
| December | 42°F 5°C | 28°F -2°C | 1.7 in 43 mm | 4.7 in120 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 16 | 0 |
| February | 10 | 1 |
| March | 13 | 0 |
| April | 5 | 2 |
| May | 3 | 11 |
| June | 10 | 10 |
| July | 8 | 12 |
| August | 13 | 2 |
| September | 8 | 3 |
| October | 12 | 1 |
| November | 13 | 0 |
| December | 6 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 43°F 6°C | 33°F 1°C |
| February | 40°F 4°C | 33°F 1°C |
| March | 54°F 12°C | 42°F 6°C |
| April | 62°F 17°C | 53°F 12°C |
| May | 71°F 22°C | 64°F 18°C |
| June | 83°F 29°C | 75°F 24°C |
| July | 86°F 30°C | 83°F 28°C |
| August | 84°F 29°C | 75°F 24°C |
| September | 76°F 25°C | 69°F 20°C |
| October | 73°F 23°C | 60°F 16°C |
| November | 58°F 14°C | 48°F 9°C |
| December | 46°F 8°C | 36°F 2°C |