Rector (3 mi SSW), Pennsylvania climate: Climate normals at a NOAA weather station
Rector (3 mi SSW)'s normal year runs from 17°F January nights to 84°F July afternoons, with 45.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.1°C, January lows of −8°C, July highs of 29°C, 1,160 mm of precipitation a year.
- NOAA stationRector (3 mi SSW)
- Station IDUSC00367338
- Location40.17°N 79.27°W
- Elevation1,330 ft (405 m)
On October 23, the normal high in Rector (3 mi SSW) is 64°F and the normal low 36°F, and the chance of measurable rain or snow is 37%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rector (3 mi SSW).
- Jan 39° 17°
- Feb 42° 18°
- Mar 51° 26°
- Apr 63° 35°
- May 73° 46°
- Jun 81° 54°
- Jul 84° 58°
- Aug 83° 56°
- Sep 77° 49°
- Oct 66° 38°
- Nov 53° 29°
- Dec 43° 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 at Rector (3 mi SSW) each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 17°F. The most precipitation falls in June (4.31 in), the least in February (3.21 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 39°F | 17°F | 28.0°F | 3.48 | 16 | <1 | 27 | 9 h 40 min |
| February | 42°F | 18°F | 29.9°F | 3.21 | 14 | <1 | 26 | 10 h 40 min |
| March | 51°F | 26°F | 38.5°F | 4.11 | 15 | <1 | 24 | 11 h 50 min |
| April | 63°F | 35°F | 49.0°F | 3.90 | 14 | <1 | 14 | 13 h 10 min |
| May | 73°F | 46°F | 59.5°F | 4.17 | 13 | <1 | 3 | 14 h 20 min |
| June | 81°F | 54°F | 67.2°F | 4.31 | 12 | 2 | <1 | 15 h |
| July | 84°F | 58°F | 71.1°F | 4.23 | 12 | 4 | <1 | 14 h 50 min |
| August | 83°F | 56°F | 69.9°F | 4.17 | 11 | 4 | <1 | 13 h 50 min |
| September | 77°F | 49°F | 62.9°F | 3.70 | 11 | 1 | 1 | 12 h 30 min |
| October | 66°F | 38°F | 52.1°F | 3.40 | 10 | <1 | 13 | 11 h 10 min |
| November | 53°F | 29°F | 41.1°F | 3.38 | 13 | <1 | 19 | 10 h |
| December | 43°F | 23°F | 33.0°F | 3.61 | 15 | <1 | 27 | 9 h 20 min |
| Year (annual) | 63°F | 37°F | 50.2°F | 45.67 | 153 | 11 | 154 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 4°C | −8°C | −2.2°C | 88 mm |
| February | 5°C | −8°C | −1.2°C | 82 mm |
| March | 10°C | −3°C | 3.6°C | 104 mm |
| April | 17°C | 2°C | 9.4°C | 99 mm |
| May | 23°C | 8°C | 15.3°C | 106 mm |
| June | 27°C | 12°C | 19.6°C | 109 mm |
| July | 29°C | 15°C | 21.7°C | 107 mm |
| August | 29°C | 14°C | 21.1°C | 106 mm |
| September | 25°C | 9°C | 17.2°C | 94 mm |
| October | 19°C | 3°C | 11.2°C | 86 mm |
| November | 12°C | −2°C | 5.1°C | 86 mm |
| December | 6°C | −5°C | 0.6°C | 92 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Laurel Summit (7 miles away), gets 142 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00367338; 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.
Which months are mildest at Rector (3 mi SSW)?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, October 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 USC00367338.
When is the last frost at Rector (3 mi SSW)?
In Rector (3 mi SSW), the last spring frost (32°F) comes after May 5 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 6 in half of years and before September 23 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
- May 51 year in 10 after May 22; 9 in 10 after April 21
- First autumn frost, half of years before
- October 61 year in 10 before September 23; 9 in 10 before October 25
NOAA puts the median frost-free season at 152 days, and the season without a hard freeze (28°F) at 176 days.
A hard freeze (28°F) comes after April 25 in half of springs and before October 20 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Rector (3 mi SSW) in zone 6a in ZIP code 15677, 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 USC00367338; 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 at Rector (3 mi SSW)?
In a normal year in Rector (3 mi SSW), 11 days a year reach 90°F, 154 nights fall to 32°F or colder and 153 days bring measurable precipitation.
- Days at 90°F or more
- 11a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 154a normal year
- Days that stay below freezing
- 26high of 32°F or less
- Days with 0.01 inch of precipitation
- 153a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00367338.
How sunny is it at Rector (3 mi SSW)?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Rector (3 mi SSW), 3.7 kWh per square metre a day. August is the sunniest month (76%) and December the cloudiest (51%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 53% | 1.6 |
| February | 58% | 2.4 |
| March | 61% | 3.4 |
| April | 66% | 4.6 |
| May | 69% | 5.3 |
| June | 73% | 5.9 |
| July | 76% | 5.9 |
| August | 76% | 5.3 |
| September | 75% | 4.3 |
| October | 66% | 2.9 |
| November | 65% | 2.0 |
| December | 51% | 1.3 |
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 many heating and cooling degree days does Rector (3 mi SSW) record?
A normal year at Rector (3 mi SSW) brings 5,960 heating degree days, 11% more than the median U.S. place (5,373), and 595 cooling degree days, 34% 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 2,801 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,145 | 0 |
| February | 983 | 0 |
| March | 823 | 0 |
| April | 485 | 5 |
| May | 208 | 39 |
| June | 56 | 122 |
| July | 10 | 199 |
| August | 18 | 168 |
| September | 120 | 56 |
| October | 405 | 5 |
| November | 717 | 0 |
| December | 990 | 0 |
| Year (annual) | 5,960 | 595 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00367338. 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.
How does Rector (3 mi SSW)'s climate compare?
Rector (3 mi SSW) is warmer than 48 of the 108 places with their own NOAA record in Pennsylvania, and wetter than 69. Across the 7,247 U.S. stations with normals, its annual mean of 50.2°F is warmer than 41%.
In the Köppen classification computed from these normals, Rector (3 mi SSW) 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.
Questions about Rector (3 mi SSW)'s climate
What is the coldest month at Rector (3 mi SSW)?
January, with a normal high of 39°F and a normal low of 17°F. The warmest is July (84°F by day, 58°F at night).
Does it snow at Rector (3 mi SSW)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Laurel Summit (7 miles away), records 142 inches of snow in a normal year.
What is the rainiest month at Rector (3 mi SSW)?
June, with 4.31 in of precipitation in a normal year; the driest is February with 3.21 in.
What plant hardiness zone is Rector (3 mi SSW) in?
The USDA's 2023 map puts Rector (3 mi SSW) in zone 6a in ZIP code 15677, the nearest ZIP area.
How late can frost come at Rector (3 mi SSW)?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Laurel Mountain, PA5 miles from this station, 49.6°F a year
- Laurel Summit, PA7 miles from this station, 45.6°F a year
- Donegal, PA8 miles from this station, 49.6°F a year
- Hidden Valley, PA9 miles from this station, 47.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made