Riverdale Park, MD
Climate overview — based on NOAA 1991-2020 normals from NATL ARBORETUM DC, MD US.
Year-round temperatures (°F)
Climate summary
Riverdale Park has an annual average temperature of 58.3°F with about 45.6 inches of precipitation per year and 9.7 inches of snow. The warmest month is July (average high 89.8°F), and the coldest is January (average low 27.8°F). July is typically the wettest month (4.62 in) and February the driest (2.77 in). Snow typically falls from December through March.
Best time to visit Riverdale Park
Full guide →Climate change signal
All-time records →40 of 366 (10.9%) of Riverdale Park's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 12 | |
| 1950s | 83 | |
| 1960s | 33 | |
| 1970s | 42 | |
| 1980s | 35 | |
| 1990s | 59 | |
| 2000s | 37 | |
| 2010s | 48 | |
| 2020s | 17 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 44.7°F | 27.8°F | 36.2°F | 3.03 in | 4.7 in | 10 |
| February | 47.8°F | 29.5°F | 38.6°F | 2.77 in | 2.3 in | 9 |
| March | 55.9°F | 36.5°F | 46.2°F | 3.96 in | 1.4 in | 10 |
| April | 67.6°F | 46.4°F | 57.0°F | 3.44 in | — | 12 |
| May | 76.9°F | 56.6°F | 66.7°F | 4.32 in | — | 12 |
| June | 85.4°F | 66.1°F | 75.7°F | 4.56 in | — | 11 |
| July | 89.8°F | 70.9°F | 80.3°F | 4.62 in | — | 11 |
| August | 88.4°F | 68.8°F | 78.6°F | 3.67 in | — | 10 |
| September | 81.7°F | 61.5°F | 71.6°F | 4.12 in | — | 10 |
| October | 69.9°F | 49.0°F | 59.4°F | 4.23 in | — | 9 |
| November | 58.4°F | 38.9°F | 48.6°F | 3.20 in | — | 8 |
| December | 49.2°F | 31.9°F | 40.6°F | 3.67 in | 1.3 in | 9 |
Climate twins of Riverdale Park
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).