Eisenhower National Historic Site, Pennsylvania climate: Climate normals at a NOAA weather station
Eisenhower National Historic Site's normal year runs from 21°F January nights to 86°F July afternoons, with 44.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.6°C, January lows of −6°C, July highs of 30°C, 1,129 mm of precipitation a year.
- NOAA stationEisenhower National Historic Site
- Station IDUSC00362537
- Location39.80°N 77.23°W
- Elevation540 ft (165 m)
On October 23, the normal high in Eisenhower National Historic Site is 64°F and the normal low 40°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Eisenhower National Historic Site.
- Jan 40° 21°
- Feb 43° 22°
- Mar 52° 30°
- Apr 64° 40°
- May 73° 49°
- Jun 82° 57°
- Jul 86° 63°
- Aug 85° 61°
- Sep 78° 54°
- Oct 66° 43°
- Nov 56° 32°
- Dec 45° 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 Eisenhower National Historic Site each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 21°F. The most precipitation falls in June (4.74 in), the least in February (2.73 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 40°F | 21°F | 30.2°F | 3.45 | 9 | <1 | 26 | 9 h 40 min |
| February | 43°F | 22°F | 32.7°F | 2.73 | 7 | <1 | 24 | 10 h 40 min |
| March | 52°F | 30°F | 41.2°F | 3.59 | 9 | <1 | 18 | 11 h 50 min |
| April | 64°F | 40°F | 52.0°F | 3.42 | 10 | <1 | 7 | 13 h 10 min |
| May | 73°F | 49°F | 61.2°F | 4.09 | 11 | 1 | 1 | 14 h 20 min |
| June | 82°F | 57°F | 69.6°F | 4.74 | 11 | 4 | <1 | 15 h |
| July | 86°F | 63°F | 74.5°F | 3.61 | 9 | 8 | <1 | 14 h 40 min |
| August | 85°F | 61°F | 72.7°F | 4.13 | 8 | 6 | <1 | 13 h 50 min |
| September | 78°F | 54°F | 65.9°F | 4.63 | 9 | 2 | <1 | 12 h 30 min |
| October | 66°F | 43°F | 54.5°F | 3.71 | 8 | <1 | 5 | 11 h 10 min |
| November | 56°F | 32°F | 43.9°F | 3.02 | 8 | <1 | 15 | 10 h |
| December | 45°F | 26°F | 35.3°F | 3.34 | 8 | <1 | 25 | 9 h 20 min |
| Year (annual) | 64°F | 42°F | 52.8°F | 44.46 | 105 | 21 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 4°C | −6°C | −1.0°C | 88 mm |
| February | 6°C | −5°C | 0.4°C | 69 mm |
| March | 11°C | −1°C | 5.1°C | 91 mm |
| April | 18°C | 4°C | 11.1°C | 87 mm |
| May | 23°C | 10°C | 16.2°C | 104 mm |
| June | 28°C | 14°C | 20.9°C | 120 mm |
| July | 30°C | 17°C | 23.6°C | 92 mm |
| August | 29°C | 16°C | 22.6°C | 105 mm |
| September | 25°C | 12°C | 18.8°C | 118 mm |
| October | 19°C | 6°C | 12.5°C | 94 mm |
| November | 13°C | 0°C | 6.6°C | 77 mm |
| December | 7°C | −3°C | 1.8°C | 85 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Biglerville (9 miles away), gets 27 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00362537; 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 Eisenhower National Historic Site?
Normal highs sit between 65°F and 85°F in May, June, August, September and October. Of those, August has the fewest days with rain (8).
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 USC00362537.
When is the last frost at Eisenhower National Historic Site?
In Eisenhower National Historic Site, the last spring frost (32°F) comes after April 24 in half of years and after May 10 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 241 year in 10 after May 10; 9 in 10 after April 7
- First autumn frost, half of years before
- October 211 year in 10 before October 6; 9 in 10 before November 4
NOAA puts the median frost-free season at 180 days, and the season without a hard freeze (28°F) at 205 days.
A hard freeze (28°F) comes after April 7 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Eisenhower National Historic Site in zone 7a in ZIP code 17325, 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 USC00362537; 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 Eisenhower National Historic Site?
In a normal year in Eisenhower National Historic Site, 21 days a year reach 90°F, 121 nights fall to 32°F or colder and 105 days bring measurable precipitation.
- Days at 90°F or more
- 21a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 121a normal year
- Days that stay below freezing
- 15high of 32°F or less
- Days with 0.01 inch of precipitation
- 105a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00362537.
How sunny is it at Eisenhower National Historic Site?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Eisenhower National Historic Site, 4.0 kWh per square metre a day. July is the sunniest month (79%) and January the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 2.0 |
| February | 68% | 2.8 |
| March | 68% | 3.8 |
| April | 71% | 4.9 |
| May | 71% | 5.4 |
| June | 77% | 6.1 |
| July | 79% | 6.0 |
| August | 78% | 5.3 |
| September | 75% | 4.3 |
| October | 72% | 3.1 |
| November | 72% | 2.3 |
| December | 66% | 1.7 |
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 Eisenhower National Historic Site record?
A normal year at Eisenhower National Historic Site brings 5,277 heating degree days, 2% fewer than the median U.S. place (5,373), and 871 cooling degree days, 4% 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 3,276 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,079 | 0 |
| February | 903 | 0 |
| March | 740 | 1 |
| April | 398 | 7 |
| May | 167 | 49 |
| June | 30 | 168 |
| July | 1 | 295 |
| August | 4 | 244 |
| September | 68 | 95 |
| October | 337 | 12 |
| November | 632 | 0 |
| December | 919 | 0 |
| Year (annual) | 5,277 | 871 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00362537. 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 Eisenhower National Historic Site's climate compare?
Eisenhower National Historic Site is warmer than 91 of the 108 places with their own NOAA record in Pennsylvania, and wetter than 59. Across the 7,247 U.S. stations with normals, its annual mean of 52.8°F is warmer than 53%.
In the Köppen classification computed from these normals, Eisenhower National Historic Site is Dfa: continental, no dry season, hot 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 Eisenhower National Historic Site share this climate record?
Woodsboro has no NOAA station with 1991-2020 normals of its 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.
- Woodsboro, MD1,114 people · 19 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 Eisenhower National Historic Site's climate
What is the coldest month at Eisenhower National Historic Site?
January, with a normal high of 40°F and a normal low of 21°F. The warmest is July (86°F by day, 63°F at night).
Does it snow at Eisenhower National Historic Site?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Biglerville (9 miles away), records 27 inches of snow in a normal year.
What is the rainiest month at Eisenhower National Historic Site?
June, with 4.74 in of precipitation in a normal year; the driest is February with 2.73 in.
What plant hardiness zone is Eisenhower National Historic Site in?
The USDA's 2023 map puts Eisenhower National Historic Site in zone 7a in ZIP code 17325, the nearest ZIP area.
How late can frost come at Eisenhower National Historic Site?
In half of years the last 32°F night comes after April 24; in one year in ten it comes after May 10. Waiting until May 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Cashtown, PA8 miles from this station, 51.3°F a year
- Biglerville, PA9 miles from this station, 52.8°F a year
- Emmitsburg, MD9 miles from this station, 53.0°F a year
- Hanover, PA11 miles from this station, 52.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made