Arnold, PA
Climate overview — based on NOAA 1991-2020 normals from NATRONA LOCK 4, PA US.
Year-round temperatures (°F)
Climate summary
Arnold has an annual average temperature of 51.5°F with about 42.2 inches of precipitation per year. The warmest month is July (average high 83.4°F), and the coldest is January (average low 20.5°F). June is typically the wettest month (4.34 in) and February the driest (2.79 in).
Best time to visit Arnold
Full guide →Climate change signal
All-time records →285 of 366 (77.9%) of Arnold'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.
| 1920s | 0 | |
| 1930s | 0 | |
| 1940s | 0 | |
| 1950s | 0 | |
| 1960s | 0 | |
| 1970s | 18 | |
| 1980s | 0 | |
| 1990s | 0 | |
| 2000s | 0 | |
| 2010s | 188 | |
| 2020s | 160 |
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 | 36.5°F | 20.5°F | 28.5°F | 3.12 in | — | 17 |
| February | 40.0°F | 21.0°F | 30.5°F | 2.79 in | — | 14 |
| March | 49.5°F | 27.1°F | 38.3°F | 3.27 in | — | 14 |
| April | 62.5°F | 38.3°F | 50.4°F | 3.58 in | — | 14 |
| May | 71.9°F | 50.0°F | 61.0°F | 3.90 in | — | 14 |
| June | 79.6°F | 58.9°F | 69.3°F | 4.34 in | — | 12 |
| July | 83.4°F | 63.4°F | 73.4°F | 4.26 in | — | 11 |
| August | 82.3°F | 61.7°F | 72.0°F | 3.55 in | — | 11 |
| September | 76.1°F | 54.6°F | 65.4°F | 3.99 in | — | 10 |
| October | 63.9°F | 43.2°F | 53.6°F | 3.09 in | — | 12 |
| November | 51.9°F | 32.6°F | 42.3°F | 3.09 in | — | 12 |
| December | 41.0°F | 25.7°F | 33.4°F | 3.26 in | — | 15 |
Climate twins of Arnold
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).