Mahanoy City, Pennsylvania climate: Normal weather by month, frost dates and records
Mahanoy City's normal year runs from 18°F January nights to 80°F July afternoons, with 53.6 inches of precipitation and 48 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.9°C, January lows of −8°C, July highs of 27°C, 1,361 mm of precipitation a year.
- NOAA stationMahanoy City (2 mi N)
- Station IDUSC00365344
- Location40.83°N 76.14°W
- Elevation1,710 ft (521 m)
- From the center2 miles
- Population3,535
On October 23, the normal high in Mahanoy City is 57°F and the normal low 39°F, and the chance of measurable rain or snow is 36%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mahanoy City.
- Jan 33° 18°
- Feb 35° 18°
- Mar 44° 25°
- Apr 57° 37°
- May 67° 47°
- Jun 76° 56°
- Jul 80° 61°
- Aug 78° 58°
- Sep 72° 52°
- Oct 60° 41°
- Nov 48° 31°
- Dec 37° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Mahanoy City each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 18°F. The most precipitation falls in September (5.24 in), the least in February (3.00 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 18°F | 25.0°F | 3.89 | 12.3 | 13 | <1 | 29 | 9 h 30 min |
| February | 35°F | 18°F | 26.3°F | 3.00 | 12.7 | 11 | <1 | 26 | 10 h 40 min |
| March | 44°F | 25°F | 34.4°F | 4.21 | 9.2 | 11 | <1 | 24 | 11 h 50 min |
| April | 57°F | 37°F | 47.0°F | 4.39 | 2.1 | 12 | <1 | 11 | 13 h 20 min |
| May | 67°F | 47°F | 57.0°F | 4.65 | 0.0 | 14 | <1 | 1 | 14 h 30 min |
| June | 76°F | 56°F | 65.9°F | 5.07 | 0.0 | 13 | <1 | <1 | 15 h |
| July | 80°F | 61°F | 70.4°F | 5.20 | 0.0 | 11 | 2 | <1 | 14 h 50 min |
| August | 78°F | 58°F | 68.1°F | 4.68 | 0.0 | 11 | <1 | <1 | 13 h 50 min |
| September | 72°F | 52°F | 62.0°F | 5.24 | 0.0 | 10 | <1 | <1 | 12 h 30 min |
| October | 60°F | 41°F | 50.8°F | 4.85 | 0.5 | 12 | <1 | 4 | 11 h 10 min |
| November | 48°F | 31°F | 39.2°F | 4.12 | 2.2 | 10 | <1 | 19 | 10 h |
| December | 37°F | 23°F | 29.9°F | 4.29 | 9.0 | 12 | <1 | 26 | 9 h 20 min |
| Year (annual) | 57°F | 39°F | 48.0°F | 53.59 | 48.0 | 140 | 2 | 139 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −8°C | −3.9°C | 99 mm | 31 cm |
| February | 2°C | −8°C | −3.2°C | 76 mm | 32 cm |
| March | 7°C | −4°C | 1.3°C | 107 mm | 23 cm |
| April | 14°C | 3°C | 8.3°C | 112 mm | 5 cm |
| May | 20°C | 8°C | 13.9°C | 118 mm | 0 cm |
| June | 24°C | 13°C | 18.8°C | 129 mm | 0 cm |
| July | 27°C | 16°C | 21.3°C | 132 mm | 0 cm |
| August | 26°C | 15°C | 20.1°C | 119 mm | 0 cm |
| September | 22°C | 11°C | 16.7°C | 133 mm | 0 cm |
| October | 16°C | 5°C | 10.4°C | 123 mm | 1 cm |
| November | 9°C | −1°C | 4.0°C | 105 mm | 6 cm |
| December | 3°C | −5°C | −1.2°C | 109 mm | 23 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00365344; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Mahanoy City?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (10).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00365344.
When is the last frost in Mahanoy City?
In Mahanoy City, the last spring frost (32°F) comes after April 30 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 22 in half of years and before October 7 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 301 year in 10 after May 18; 9 in 10 after April 15
- First autumn frost, half of years before
- October 221 year in 10 before October 7; 9 in 10 before November 3
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 199 days.
A hard freeze (28°F) comes after April 16 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mahanoy City in zone 6b in ZIP code 17948, the nearest ZIP area.
Frost dates for every NOAA station in Pennsylvania · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00365344; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Mahanoy City?
In a normal year in Mahanoy City, 2 days a year reach 90°F, 139 nights fall to 32°F or colder and 140 days bring measurable precipitation.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 139a normal year
- Days that stay below freezing
- 44high of 32°F or less
- Days with 0.01 inch of precipitation
- 140a normal year
- Days with 1 inch of snow or more
- 15a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00365344.
How sunny is Mahanoy City?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mahanoy City, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.8 |
| February | 66% | 2.7 |
| March | 66% | 3.6 |
| April | 69% | 4.8 |
| May | 69% | 5.3 |
| June | 75% | 6.0 |
| July | 79% | 6.0 |
| August | 76% | 5.2 |
| September | 74% | 4.2 |
| October | 68% | 2.9 |
| November | 69% | 2.1 |
| December | 60% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Mahanoy City need?
A normal year in Mahanoy City brings 6,616 heating degree days, 23% more than the median U.S. place (5,373), and 452 cooling degree days, 50% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,499 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,238 | 0 |
| February | 1,083 | 0 |
| March | 950 | 0 |
| April | 543 | 3 |
| May | 264 | 14 |
| June | 59 | 86 |
| July | 10 | 177 |
| August | 24 | 120 |
| September | 138 | 49 |
| October | 444 | 3 |
| November | 775 | 0 |
| December | 1,088 | 0 |
| Year (annual) | 6,616 | 452 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00365344. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Mahanoy City been warmer than normal lately?
2025 averaged 48.8°F, 0.8°F above the 1991-2020 normal of 48.0°F. 2 of the 2 complete years since 2024 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2024 | 51.2°F | +3.2°F | 45.52 | 40.4 |
| 2025 | 48.8°F | +0.8°F | 42.42 | 26.6 |
Source: observed years: ACIS, station USC00365344. A year counts only with all twelve months complete.
How does Mahanoy City's climate compare?
Mahanoy City is warmer than 25 of the other 107 places with their own NOAA record in Pennsylvania, and wetter than 104. Across the 7,247 U.S. stations with normals, its annual mean of 48.0°F is warmer than 32%.
In the Köppen classification computed from these normals, Mahanoy City is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Mahanoy City share this climate record?
48 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Hazleton, PA30,354 people · 12 mi NE
- Pottsville, PA13,404 people · 11 mi S
- Tamaqua, PA6,944 people · 12 mi E
- West Hazleton, PA5,231 people · 11 mi NE
- Minersville, PA4,426 people · 12 mi SW
- Shenandoah, PA4,156 people · 3 mi W
- Frackville, PA3,899 people · 6 mi SW
- St. Clair, PA2,763 people · 8 mi S
- McAdoo, PA2,474 people · 9 mi NE
- Conyngham, PA1,837 people · 12 mi N
- Port Carbon, PA1,810 people · 10 mi S
- Hometown, PA1,426 people · 8 mi E
- Girardville, PA1,322 people · 8 mi W
- Shenandoah Heights, PA1,284 people · 3 mi W
- New Philadelphia, PA1,067 people · 8 mi S
- Harleigh, PA986 people · 14 mi NE
- Palo Alto, PA977 people · 10 mi S
- Lattimer, PA879 people · 15 mi NE
- Tresckow, PA783 people · 11 mi NE
- Ringtown, PA723 people · 5 mi W
- Englewood, PA649 people · 6 mi SW
- Park Crest, PA616 people · 4 mi E
- Pardeesville, PA603 people · 15 mi NE
- Gilberton, PA588 people · 5 mi SW
- Altamont, PA525 people · 5 mi SW
- Sheppton, PA498 people · 4 mi N
- Forestville, PA471 people · 12 mi SW
- Mechanicsville, PA455 people · 10 mi S
- Weston, PA455 people · 7 mi N
- Kelayres, PA431 people · 9 mi NE
- Tuscarora, PA392 people · 7 mi SE
- Oneida, PA382 people · 5 mi N
- Middleport, PA362 people · 8 mi S
- Brockton, PA350 people · 7 mi SE
- Seltzer, PA343 people · 11 mi SW
- Heckscherville, PA315 people · 10 mi SW
- Marlin, PA307 people · 12 mi SW
- Nuremberg, PA259 people · 7 mi N
- Cumbola, PA235 people · 8 mi S
- Brandonville, PA203 people · 2 mi NW
- Llewellyn, PA190 people · 13 mi SW
- Maryd, PA183 people · 7 mi SE
- Park Place, PA168 people · 2 mi E
- Delano, PA162 people · 4 mi E
- New Boston, PA160 people · 2 mi S
- Morea, PA131 people · 3 mi SW
- Grier City, PA121 people · 5 mi E
- Mount Carbon, PA89 people · 11 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Mahanoy City's climate
What is the coldest month in Mahanoy City?
January, with a normal high of 33°F and a normal low of 18°F. The warmest is July (80°F by day, 61°F at night).
Does it snow in Mahanoy City?
Yes: 48 inches in a normal year, falling on 22 days with 0.1 inch or more, the most in February (12.7 inches).
What is the rainiest month in Mahanoy City?
September, with 5.24 in of precipitation in a normal year; the driest is February with 3.00 in.
What plant hardiness zone is Mahanoy City in?
The USDA's 2023 map puts Mahanoy City in zone 6b in ZIP code 17948, the nearest ZIP area.
How late can frost come in Mahanoy City?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Bear Gap, PA19 miles from this station, 50.5°F a year
- Hamburg, PA21 miles from this station, 52.2°F a year
- Lehighton, PA24 miles from this station, 50.0°F a year
- Francis E Walter Dam, PA29 miles from this station, 46.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made