Mercer, Pennsylvania Climate
United States
Pop. 1,936 Elev. 384 m / 1,260 ft
TZ: America/New_York (UTC-4) ·
Mercer has mild summers with average highs of 83°F (28°C) in July, and frigid winters averaging 16°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 91°F (33°C), while wind chill can drive winter lows to 8°F (-13°C). Rain falls on about 77 days per year (43.4 in / 1102 mm total), with snow on 3 days and 50 in (1272 mm) of annual accumulation. The city averages 84 sunny days per year and around 46 thunderstorm days. Ocean water temperatures reach 77°F (25°C) in summer.
| Temperature | 83°F (29°C) high | 16°F (-9°C) low |
| Feels like | 91°F (33°C) high | 8°F (-13°C) low |
| Rain | 77 days | 43.4 in (1102 mm) /yr |
| Snow | 3 days | 50.1 in (1272 mm) /yr |
| Sky | 84 sunny | 46 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
78
Jan 84
Feb 58
Mar 74
Apr 72
May 62
Jun 57
Jul 43
Aug 44
Sep 44
Oct 68
Nov 80
Dec Humidity (%)
72
Jan 69
Feb 56
Mar 61
Apr 74
May 75
Jun 76
Jul 66
Aug 66
Sep 68
Oct 73
Nov 74
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 51 mi Pittsburgh International Airport (PIT)
Ski resort 44 mi Mount Pleasant of Edinboro
National park 30 mi Pymatuning State Park
Mountain peak
(5,053 ft) 321 mi Grave Mountain
Hospital 9 mi AHN Grove City
Hiking trail 9 mi Shanango Hiking
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 28°F -2°C | 16°F -9°C | 0.8 in 20 mm | 14.1 in358 mm | 3 |
| February | 36°F 2°C | 23°F -5°C | 3.1 in 79 mm | 10.7 in272 mm | 0 |
| March | 55°F 13°C | 34°F 1°C | 2.7 in 69 mm | 2.6 in66 mm | 9 |
| April | 62°F 16°C | 42°F 5°C | 4.9 in 125 mm | 1.5 in37 mm | 5 |
| May | 67°F 19°C | 51°F 10°C | 9.0 in 229 mm | — | 4 |
| June | 79°F 26°C | 63°F 17°C | 7.3 in 184 mm | — | 7 |
| July | 83°F 29°C | 66°F 19°C | 3.7 in 94 mm | — | 9 |
| August | 79°F 26°C | 59°F 15°C | 1.1 in 27 mm | — | 13 |
| September | 77°F 25°C | 55°F 13°C | 2.2 in 57 mm | — | 13 |
| October | 63°F 17°C | 45°F 7°C | 3.9 in 99 mm | — | 12 |
| November | 47°F 9°C | 33°F 1°C | 2.5 in 65 mm | 3.6 in92 mm | 6 |
| December | 36°F 2°C | 21°F -6°C | 2.1 in 54 mm | 17.6 in447 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 3 | 0 |
| February | 0 | 1 |
| March | 9 | 3 |
| April | 5 | 6 |
| May | 4 | 11 |
| June | 7 | 11 |
| July | 9 | 6 |
| August | 13 | 1 |
| September | 13 | 3 |
| October | 12 | 2 |
| November | 6 | 1 |
| December | 3 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 37°F 3°C | 32°F 0°C |
| February | 34°F 1°C | 32°F 0°C |
| March | 37°F 3°C | 38°F 3°C |
| April | 46°F 8°C | 47°F 8°C |
| May | 55°F 13°C | 57°F 14°C |
| June | 70°F 21°C | 68°F 20°C |
| July | 77°F 25°C | 76°F 24°C |
| August | 77°F 25°C | 70°F 21°C |
| September | 68°F 20°C | 64°F 18°C |
| October | 67°F 20°C | 56°F 13°C |
| November | 54°F 12°C | 41°F 5°C |
| December | 44°F 7°C | 33°F 0°C |