Cowanesque Dam, Pennsylvania climate: Climate normals at a NOAA weather station
Cowanesque Dam's normal year runs from 15°F January nights to 81°F July afternoons, with 36.9 inches of precipitation and 38 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.3°C, January lows of −10°C, July highs of 27°C, 936 mm of precipitation a year.
- NOAA stationCowanesque Dam
- Station IDUSC00361838
- Location41.99°N 77.16°W
- Elevation1,150 ft (351 m)
On October 23, the normal high in Cowanesque Dam is 58°F and the normal low 36°F, and the chance of measurable rain or snow is 44%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Cowanesque Dam.
- Jan 32° 15°
- Feb 35° 15°
- Mar 44° 22°
- Apr 57° 33°
- May 69° 44°
- Jun 77° 53°
- Jul 81° 58°
- Aug 80° 57°
- Sep 73° 50°
- Oct 61° 39°
- Nov 48° 30°
- Dec 37° 22°
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 Cowanesque Dam each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 15°F. The most precipitation falls in June (4.26 in), the least in February (1.74 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 15°F | 23.4°F | 2.17 | 9.5 | 15 | <1 | 29 | 9 h 30 min |
| February | 35°F | 15°F | 24.8°F | 1.74 | 9.1 | 12 | <1 | 27 | 10 h 30 min |
| March | 44°F | 22°F | 32.7°F | 2.66 | 6.7 | 13 | <1 | 27 | 11 h 50 min |
| April | 57°F | 33°F | 44.7°F | 3.19 | 1.7 | 13 | <1 | 17 | 13 h 20 min |
| May | 69°F | 44°F | 56.4°F | 3.15 | 0.0 | 14 | <1 | 4 | 14 h 30 min |
| June | 77°F | 53°F | 65.1°F | 4.26 | 0.0 | 13 | 1 | <1 | 15 h 10 min |
| July | 81°F | 58°F | 69.5°F | 3.50 | 0.0 | 12 | 4 | <1 | 15 h |
| August | 80°F | 57°F | 68.2°F | 3.67 | 0.0 | 11 | 2 | <1 | 14 h |
| September | 73°F | 50°F | 61.2°F | 3.99 | 0.0 | 11 | 1 | 1 | 12 h 30 min |
| October | 61°F | 39°F | 49.6°F | 3.38 | 0.2 | 14 | <1 | 9 | 11 h 10 min |
| November | 48°F | 30°F | 38.6°F | 2.71 | 2.3 | 12 | <1 | 21 | 9 h 50 min |
| December | 37°F | 22°F | 29.5°F | 2.45 | 8.5 | 14 | <1 | 27 | 9 h 10 min |
| Year (annual) | 58°F | 36°F | 47.0°F | 36.87 | 38.0 | 155 | 8 | 161 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −10°C | −4.8°C | 55 mm | 24 cm |
| February | 2°C | −9°C | −4.0°C | 44 mm | 23 cm |
| March | 6°C | −6°C | 0.4°C | 68 mm | 17 cm |
| April | 14°C | 0°C | 7.1°C | 81 mm | 4 cm |
| May | 21°C | 7°C | 13.6°C | 80 mm | 0 cm |
| June | 25°C | 12°C | 18.4°C | 108 mm | 0 cm |
| July | 27°C | 14°C | 20.8°C | 89 mm | 0 cm |
| August | 27°C | 14°C | 20.1°C | 93 mm | 0 cm |
| September | 23°C | 10°C | 16.2°C | 101 mm | 0 cm |
| October | 16°C | 4°C | 9.8°C | 86 mm | 1 cm |
| November | 9°C | −1°C | 3.7°C | 69 mm | 6 cm |
| December | 3°C | −6°C | −1.4°C | 62 mm | 22 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00361838; 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 Cowanesque Dam?
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 (11).
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 USC00361838.
When is the last frost at Cowanesque Dam?
In Cowanesque Dam, the last spring frost (32°F) comes after May 9 in half of years and after May 25 in one year in ten; the first autumn frost comes before October 12 in half of years and before September 29 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 91 year in 10 after May 25; 9 in 10 after April 25
- First autumn frost, half of years before
- October 121 year in 10 before September 29; 9 in 10 before October 28
NOAA puts the median frost-free season at 155 days, and the season without a hard freeze (28°F) at 180 days.
A hard freeze (28°F) comes after April 29 in half of springs and before October 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Cowanesque Dam in zone 6a in ZIP code 16929, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 5b: the coldest night of a typical year reaches −11°F (26 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Pennsylvania · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00361838; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Cowanesque Dam?
In a normal year in Cowanesque Dam, 8 days a year reach 90°F, 161 nights fall to 32°F or colder and 155 days bring measurable precipitation.
- Days at 90°F or more
- 8a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 161a normal year
- Days that stay below freezing
- 41high of 32°F or less
- Days with 0.01 inch of precipitation
- 155a normal year
- Days with 1 inch of snow or more
- 13a normal year
The highest temperature in this station's record (since 1993) is 103°F, on July 23, 2011; the lowest is −27°F, on January 6, 1996.
The wettest calendar year on that record is 2018, with 52.77 in; the snowiest season is 2010–11, with 70.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00361838; records: ACIS (NOAA Regional Climate Centers), station USC00361838. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Cowanesque Dam?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Cowanesque Dam, 3.7 kWh per square metre a day. July is the sunniest month (75%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 64% | 2.5 |
| March | 65% | 3.6 |
| April | 66% | 4.6 |
| May | 67% | 5.3 |
| June | 72% | 5.8 |
| July | 75% | 5.8 |
| August | 75% | 5.1 |
| September | 72% | 4.1 |
| October | 65% | 2.7 |
| November | 63% | 1.9 |
| December | 55% | 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 Cowanesque Dam record?
A normal year at Cowanesque Dam brings 6,967 heating degree days, 30% more than the median U.S. place (5,373), and 433 cooling degree days, 52% 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 2,365 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,289 | 0 |
| February | 1,124 | 0 |
| March | 1,003 | 0 |
| April | 611 | 2 |
| May | 290 | 23 |
| June | 80 | 81 |
| July | 18 | 157 |
| August | 28 | 126 |
| September | 155 | 41 |
| October | 479 | 3 |
| November | 791 | 0 |
| December | 1,101 | 0 |
| Year (annual) | 6,967 | 433 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00361838. 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.
Have recent years at Cowanesque Dam been warmer than normal?
2025 averaged 47.5°F, 0.5°F above the 1991-2020 normal of 47.0°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.0°F | +2.0°F | 41.41 | – |
| 2022 | 47.2°F | +0.2°F | 34.08 | – |
| 2023 | 49.5°F | +2.5°F | 34.71 | 26.6 |
| 2024 | 49.8°F | +2.8°F | 33.93 | 43.0 |
| 2025 | 47.5°F | +0.5°F | 33.88 | 37.9 |
Source: observed years: ACIS, station USC00361838. A year counts only with all twelve months complete.
How does Cowanesque Dam's climate compare?
Cowanesque Dam is warmer than 16 of the 108 places with their own NOAA record in Pennsylvania, and wetter than 2. Across the 7,247 U.S. stations with normals, its annual mean of 47.0°F is warmer than 28%.
In the Köppen classification computed from these normals, Cowanesque Dam 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 Cowanesque Dam share this climate record?
3 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.
- Gang Mills, NY4,369 people · 12 mi N
- Campbell, NY601 people · 17 mi N
- Coopers Plains, NY522 people · 13 mi N
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 Cowanesque Dam's climate
What is the coldest month at Cowanesque Dam?
January, with a normal high of 32°F and a normal low of 15°F. The warmest is July (81°F by day, 58°F at night).
Does it snow at Cowanesque Dam?
Yes: 38 inches in a normal year, falling on 22 days with 0.1 inch or more, the most in January (9.5 inches).
What is the rainiest month at Cowanesque Dam?
June, with 4.26 in of precipitation in a normal year; the driest is February with 1.74 in.
What plant hardiness zone is Cowanesque Dam in?
The USDA's 2023 map puts Cowanesque Dam in zone 6a in ZIP code 16929, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −11°F (26 years, 1991-2020): zone 5b.
How late can frost come at Cowanesque Dam?
In half of years the last 32°F night comes after May 9; in one year in ten it comes after May 25. Waiting until May 25 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Tioga, PA6 miles from this station, 47.1°F a year
- Addison, NY9 miles from this station, 46.6°F a year
- Corning, NY11 miles from this station, 44.6°F a year
- Elmira, NY18 miles from this station, 48.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made