Mount Joy, Pennsylvania Climate
United States
Pop. 8,071 Elev. 116 m / 381 ft
TZ: America/New_York (UTC-4) ·
Mount Joy sees warm summers peaking at 87°F (31°C) in July, and cold winters that bottom out around 24°F (-4°C) in January. Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 16°F (-9°C). Precipitation occurs on roughly 61 days per year (35.9 in / 912 mm total), with snow on 6 days and 23 in (592 mm) of annual accumulation. The city averages 117 sunny days per year and around 35 thunderstorm days. Nearby lake water reaches 80°F (27°C) in summer.
| Temperature | 87°F (31°C) high | 24°F (-4°C) low |
| Feels like | 99°F (37°C) high | 16°F (-9°C) low |
| Rain | 61 days | 35.9 in (912 mm) /yr |
| Snow | 6 days | 23.3 in (592 mm) /yr |
| Sky | 117 sunny | 35 stormy |
| Wind | 2.6 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
44
Jan 64
Feb 46
Mar 69
Apr 74
May 62
Jun 61
Jul 51
Aug 59
Sep 43
Oct 56
Nov 63
Dec Humidity (%)
54
Jan 55
Feb 48
Mar 53
Apr 66
May 69
Jun 72
Jul 68
Aug 68
Sep 64
Oct 59
Nov 62
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 11 mi Lancaster Airport (LNS)
Ski resort 22 mi Roundtop Mountain Resort
National park 81 mi Greenbelt Park
Mountain peak
(5,102 ft) 307 mi Algonquin Peak
Hospital 7 mi Penn State Health Lancaster Medical Center
Hiking trail 9 mi
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 36°F 2°C | 24°F -4°C | 0.4 in 11 mm | 8.5 in215 mm | 15 |
| February | 42°F 6°C | 29°F -2°C | 1.8 in 46 mm | 6.7 in169 mm | 6 |
| March | 60°F 15°C | 39°F 4°C | 2.1 in 54 mm | — | 13 |
| April | 65°F 19°C | 48°F 9°C | 3.2 in 82 mm | — | 4 |
| May | 72°F 22°C | 57°F 14°C | 7.2 in 184 mm | — | 3 |
| June | 83°F 28°C | 66°F 19°C | 4.1 in 103 mm | — | 10 |
| July | 87°F 31°C | 72°F 22°C | 6.7 in 170 mm | — | 8 |
| August | 80°F 27°C | 63°F 17°C | 0.9 in 24 mm | — | 15 |
| September | 78°F 26°C | 61°F 16°C | 3.3 in 84 mm | — | 11 |
| October | 66°F 19°C | 48°F 9°C | 2.8 in 72 mm | — | 16 |
| November | 54°F 12°C | 39°F 4°C | 1.6 in 40 mm | 0.1 in4 mm | 10 |
| December | 39°F 4°C | 27°F -3°C | 1.6 in 42 mm | 8.0 in204 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 0 |
| February | 6 | 1 |
| March | 13 | 2 |
| April | 4 | 3 |
| May | 3 | 7 |
| June | 10 | 7 |
| July | 8 | 8 |
| August | 15 | 1 |
| September | 11 | 4 |
| October | 16 | 1 |
| November | 10 | 0 |
| December | 6 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 33°F 0°C |
| February | 32°F 0°C |
| March | 45°F 7°C |
| April | 54°F 12°C |
| May | 63°F 17°C |
| June | 74°F 23°C |
| July | 80°F 27°C |
| August | 73°F 23°C |
| September | 69°F 20°C |
| October | 56°F 14°C |
| November | 44°F 6°C |
| December | 32°F 0°C |