Greencastle, Pennsylvania Climate
United States
Pop. 4,043 Elev. 179 m / 587 ft
TZ: America/New_York (UTC-4) ·
Greencastle sees warm summers peaking at 89°F (32°C) in July, and frigid winters that bottom out around 22°F (-6°C) in January. Humidity pushes the summer feels-like temperature to 103°F (39°C), while wind chill can drive winter lows to 14°F (-10°C). Precipitation occurs on roughly 59 days per year (32.1 in / 815 mm total), with snow on 4 days and 25 in (631 mm) of annual accumulation. The city averages 116 sunny days per year and around 33 thunderstorm days.
| Temperature | 89°F (32°C) high | 22°F (-6°C) low |
| Feels like | 103°F (39°C) high | 14°F (-10°C) low |
| Rain | 59 days | 32.1 in (815 mm) /yr |
| Snow | 4 days | 24.8 in (631 mm) /yr |
| Sky | 116 sunny | 33 stormy |
| Wind | 2.2 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 (%)
45
Jan 60
Feb 45
Mar 69
Apr 74
May 59
Jun 58
Jul 51
Aug 60
Sep 44
Oct 52
Nov 66
Dec Humidity (%)
57
Jan 57
Feb 48
Mar 55
Apr 66
May 70
Jun 70
Jul 64
Aug 64
Sep 62
Oct 58
Nov 60
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 6 mi Hagerstown Regional Richard A Henson Field (HGR)
Ski resort 12 mi Whitetail Resort
National park 16 mi Appalachian National Scenic Trail
Mountain peak
(4,928 ft) 296 mi Third Peak
Hospital 9 mi Western Maryland Hospital Center
Hiking trail 13 mi Deer Lick Shelter Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 35°F 2°C | 22°F -6°C | 0.4 in 11 mm | 11.0 in279 mm | 15 |
| February | 42°F 6°C | 29°F -2°C | 1.6 in 42 mm | 7.2 in183 mm | 9 |
| March | 61°F 16°C | 39°F 4°C | 2.2 in 56 mm | — | 13 |
| April | 68°F 20°C | 48°F 9°C | 2.8 in 71 mm | — | 5 |
| May | 73°F 23°C | 56°F 13°C | 7.7 in 196 mm | — | 3 |
| June | 84°F 29°C | 65°F 18°C | 4.2 in 106 mm | — | 9 |
| July | 89°F 32°C | 71°F 22°C | 4.3 in 109 mm | — | 7 |
| August | 82°F 28°C | 63°F 17°C | 1.7 in 44 mm | — | 13 |
| September | 80°F 26°C | 60°F 15°C | 1.7 in 42 mm | — | 9 |
| October | 67°F 19°C | 47°F 8°C | 2.2 in 56 mm | — | 15 |
| November | 55°F 13°C | 38°F 3°C | 1.5 in 39 mm | 0.3 in7 mm | 13 |
| December | 40°F 5°C | 27°F -3°C | 1.7 in 43 mm | 6.4 in162 mm | 5 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 0 |
| February | 9 | 1 |
| March | 13 | 2 |
| April | 5 | 2 |
| May | 3 | 9 |
| June | 9 | 5 |
| July | 7 | 7 |
| August | 13 | 3 |
| September | 9 | 2 |
| October | 15 | 1 |
| November | 13 | 0 |
| December | 5 | 1 |