Alvin R Bush Dam, Pennsylvania climate: Climate normals at a NOAA weather station
Alvin R Bush Dam's normal year runs from 18°F January nights to 82°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.4°C, January lows of −8°C, July highs of 28°C.
- NOAA stationAlvin R Bush Dam
- Station IDUSC00360147
- Location41.36°N 77.93°W
- Elevation930 ft (284 m)
On October 23, the normal high in Alvin R Bush Dam is 58°F and the normal low 39°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Alvin R Bush Dam.
- Jan 34° 18°
- Feb 38° 18°
- Mar 47° 25°
- Apr 59° 35°
- May 70° 47°
- Jun 78° 55°
- Jul 82° 60°
- Aug 80° 59°
- Sep 74° 52°
- Oct 61° 42°
- Nov 49° 31°
- Dec 38° 26°
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 Alvin R Bush Dam each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 18°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 34°F | 18°F | 25.9°F | – | <1 | 27 | 9 h 30 min |
| February | 38°F | 18°F | 27.9°F | – | <1 | 26 | 10 h 40 min |
| March | 47°F | 25°F | 35.9°F | – | <1 | 23 | 11 h 50 min |
| April | 59°F | 35°F | 47.2°F | – | <1 | 11 | 13 h 20 min |
| May | 70°F | 47°F | 58.4°F | – | 1 | 3 | 14 h 30 min |
| June | 78°F | 55°F | 66.2°F | – | 1 | <1 | 15 h 10 min |
| July | 82°F | 60°F | 70.7°F | – | 5 | <1 | 14 h 50 min |
| August | 80°F | 59°F | 69.8°F | – | 3 | <1 | 13 h 50 min |
| September | 74°F | 52°F | 63.1°F | – | <1 | <1 | 12 h 30 min |
| October | 61°F | 42°F | 51.4°F | – | <1 | 1 | 11 h 10 min |
| November | 49°F | 31°F | 40.1°F | – | <1 | 19 | 9 h 50 min |
| December | 38°F | 26°F | 31.8°F | – | <1 | 26 | 9 h 10 min |
| Year (annual) | 59°F | 39°F | 49.0°F | – | 9 | 135 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 1°C | −8°C | −3.4°C |
| February | 3°C | −8°C | −2.3°C |
| March | 8°C | −4°C | 2.2°C |
| April | 15°C | 2°C | 8.4°C |
| May | 21°C | 8°C | 14.7°C |
| June | 25°C | 13°C | 19.0°C |
| July | 28°C | 15°C | 21.5°C |
| August | 27°C | 15°C | 21.0°C |
| September | 23°C | 11°C | 17.3°C |
| October | 16°C | 5°C | 10.8°C |
| November | 9°C | 0°C | 4.5°C |
| December | 3°C | −4°C | −0.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Stevenson Dam (6 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00360147; 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 Alvin R Bush Dam?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00360147.
When is the last frost at Alvin R Bush Dam?
In Alvin R Bush Dam, the last spring frost (32°F) comes after April 29 in half of years and after May 14 in one year in ten; the first autumn frost comes before October 21 in half of years and before October 6 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 291 year in 10 after May 14; 9 in 10 after April 15
- First autumn frost, half of years before
- October 211 year in 10 before October 6; 9 in 10 before November 5
NOAA puts the median frost-free season at 177 days, and the season without a hard freeze (28°F) at 201 days.
A hard freeze (28°F) comes after April 16 in half of springs and before November 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Alvin R Bush Dam in zone 6a in ZIP code 17778, 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 6b: the coldest night of a typical year reaches −4°F (16 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 USC00360147; 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 Alvin R Bush Dam?
In a normal year in Alvin R Bush Dam, 9 days a year reach 90°F and 135 nights fall to 32°F or colder.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 135a normal year
- Days that stay below freezing
- 24high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00360147.
How sunny is it at Alvin R Bush Dam?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Alvin R Bush 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 Alvin R Bush Dam record?
A normal year at Alvin R Bush Dam brings 6,235 heating degree days, 16% more than the median U.S. place (5,373), and 444 cooling degree days, 51% 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 2,554 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,211 | 0 |
| February | 1,038 | 0 |
| March | 902 | 0 |
| April | 534 | 0 |
| May | 214 | 8 |
| June | 30 | 66 |
| July | 0 | 175 |
| August | 6 | 154 |
| September | 98 | 39 |
| October | 423 | 2 |
| November | 748 | 0 |
| December | 1,029 | 0 |
| Year (annual) | 6,235 | 444 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00360147. 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 Alvin R Bush Dam's climate compare?
Alvin R Bush Dam is warmer than 37 of the 108 places with their own NOAA record in Pennsylvania. Across the 7,247 U.S. stations with normals, its annual mean of 49.0°F is warmer than 36%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Alvin R Bush Dam's climate
What is the coldest month at Alvin R Bush Dam?
January, with a normal high of 34°F and a normal low of 18°F. The warmest is July (82°F by day, 60°F at night).
Does it snow at Alvin R Bush Dam?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Stevenson Dam (6 miles away), records 39 inches of snow in a normal year.
What plant hardiness zone is Alvin R Bush Dam in?
The USDA's 2023 map puts Alvin R Bush Dam in zone 6a in ZIP code 17778, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −4°F (16 years, 1991-2020): zone 6b.
How late can frost come at Alvin R Bush Dam?
In half of years the last 32°F night comes after April 29; in one year in ten it comes after May 14. Waiting until May 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Stevenson Dam, PA6 miles from this station, 47.3°F a year
- Renovo, PA10 miles from this station, 49.6°F a year
- Emporium, PA19 miles from this station, 48.3°F a year
- Clarence, PA21 miles from this station, 46.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made