Hamburg, Pennsylvania climate: Normal weather by month, frost dates and records
Hamburg's normal year runs from 20°F January nights to 85°F July afternoons, with 49.5 inches of precipitation and 21 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.2°C, January lows of −7°C, July highs of 30°C, 1,257 mm of precipitation a year.
- NOAA stationHamburg
- Station IDUSC00363632
- Location40.55°N 75.99°W
- Elevation369 ft (113 m)
- From the centerunder 1 mile
- Population4,552
On October 23, the normal high in Hamburg is 62°F and the normal low 40°F, and the chance of measurable rain or snow is 34%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hamburg.
- Jan 38° 20°
- Feb 41° 22°
- Mar 50° 30°
- Apr 63° 40°
- May 73° 50°
- Jun 81° 60°
- Jul 85° 64°
- Aug 83° 63°
- Sep 76° 55°
- Oct 64° 42°
- Nov 53° 33°
- Dec 42° 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 in Hamburg each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 20°F. The most precipitation falls in July (5.15 in), the least in February (2.73 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 20°F | 28.8°F | 3.45 | 5.1 | 11 | <1 | 28 | 9 h 30 min |
| February | 41°F | 22°F | 31.2°F | 2.73 | 7.1 | 9 | <1 | 25 | 10 h 40 min |
| March | 50°F | 30°F | 39.9°F | 3.70 | 4.6 | 10 | <1 | 20 | 11 h 50 min |
| April | 63°F | 40°F | 51.1°F | 3.72 | 0.3 | 12 | <1 | 5 | 13 h 10 min |
| May | 73°F | 50°F | 61.4°F | 4.08 | 0.0 | 14 | 1 | <1 | 14 h 20 min |
| June | 81°F | 60°F | 70.3°F | 4.96 | 0.0 | 12 | 3 | <1 | 15 h |
| July | 85°F | 64°F | 74.8°F | 5.15 | 0.0 | 11 | 7 | <1 | 14 h 50 min |
| August | 83°F | 63°F | 72.8°F | 4.92 | 0.0 | 11 | 4 | <1 | 13 h 50 min |
| September | 76°F | 55°F | 65.4°F | 5.09 | 0.0 | 10 | 1 | <1 | 12 h 30 min |
| October | 64°F | 42°F | 53.4°F | 4.47 | 0.0 | 11 | <1 | 3 | 11 h 10 min |
| November | 53°F | 33°F | 42.9°F | 3.32 | 0.5 | 9 | <1 | 15 | 10 h |
| December | 42°F | 26°F | 33.8°F | 3.89 | 3.7 | 11 | <1 | 26 | 9 h 20 min |
| Year (annual) | 62°F | 42°F | 52.2°F | 49.48 | 21.3 | 133 | 17 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −7°C | −1.8°C | 88 mm | 13 cm |
| February | 5°C | −6°C | −0.4°C | 69 mm | 18 cm |
| March | 10°C | −1°C | 4.4°C | 94 mm | 12 cm |
| April | 17°C | 4°C | 10.6°C | 94 mm | 1 cm |
| May | 23°C | 10°C | 16.3°C | 104 mm | 0 cm |
| June | 27°C | 15°C | 21.3°C | 126 mm | 0 cm |
| July | 30°C | 18°C | 23.8°C | 131 mm | 0 cm |
| August | 28°C | 17°C | 22.7°C | 125 mm | 0 cm |
| September | 24°C | 13°C | 18.6°C | 129 mm | 0 cm |
| October | 18°C | 6°C | 11.9°C | 114 mm | 0 cm |
| November | 11°C | 1°C | 6.1°C | 84 mm | 1 cm |
| December | 6°C | −4°C | 1.0°C | 99 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00363632; 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 Hamburg?
Normal highs sit between 65°F and 85°F in May, June, 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 USC00363632.
When is the last frost in Hamburg?
In Hamburg, the last spring frost (32°F) comes after April 16 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 9 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 161 year in 10 after May 3; 9 in 10 after April 2
- First autumn frost, half of years before
- October 251 year in 10 before October 9; 9 in 10 before November 7
NOAA puts the median frost-free season at 189 days, and the season without a hard freeze (28°F) at 214 days.
A hard freeze (28°F) comes after April 3 in half of springs and before November 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Hamburg in zone 7a in ZIP code 19526, 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 USC00363632; 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 Hamburg?
In a normal year in Hamburg, 17 days a year reach 90°F, 121 nights fall to 32°F or colder and 133 days bring measurable precipitation.
- Days at 90°F or more
- 17a 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
- 21high of 32°F or less
- Days with 0.01 inch of precipitation
- 133a normal year
- Days with 1 inch of snow or more
- 7a normal year
The highest temperature in this station's record (since 1894) is 107°F, on July 3, 1898; the lowest is −20°F, on January 15, 1912.
The wettest calendar year on that record is 2018, with 75.92 in; the snowiest season is 2020–21, with 39.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00363632; records: ACIS (NOAA Regional Climate Centers), station USC00363632. Records use complete months only; a month missing more than three days is left out.
How sunny is Hamburg?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Hamburg, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.9 |
| February | 68% | 2.7 |
| March | 67% | 3.6 |
| April | 70% | 4.8 |
| May | 69% | 5.3 |
| June | 74% | 5.9 |
| July | 79% | 6.0 |
| August | 77% | 5.2 |
| September | 75% | 4.2 |
| October | 69% | 3.0 |
| November | 70% | 2.1 |
| December | 63% | 1.6 |
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 Hamburg need?
A normal year in Hamburg brings 5,537 heating degree days, 3% more than the median U.S. place (5,373), and 895 cooling degree days, 1% 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 3,237 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,121 | 0 |
| February | 945 | 0 |
| March | 777 | 0 |
| April | 424 | 8 |
| May | 162 | 52 |
| June | 22 | 180 |
| July | 2 | 307 |
| August | 4 | 246 |
| September | 81 | 93 |
| October | 370 | 9 |
| November | 663 | 0 |
| December | 967 | 0 |
| Year (annual) | 5,537 | 895 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00363632. 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 Hamburg's climate compare?
Hamburg is warmer than 80 of the other 107 places with their own NOAA record in Pennsylvania, and wetter than 92. Across the 7,247 U.S. stations with normals, its annual mean of 52.2°F is warmer than 50%.
In the Köppen classification computed from these normals, Hamburg 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 Hamburg share this climate record?
23 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.
- Schuylkill Haven, PA5,273 people · 11 mi NW
- Lake Wynonah, PA3,180 people · 10 mi W
- Orwigsburg, PA3,014 people · 9 mi NW
- West Hamburg, PA1,920 people · 1 mi W
- Cressona, PA1,616 people · 12 mi NW
- Shoemakersville, PA1,385 people · 4 mi S
- Friedensburg, PA833 people · 13 mi W
- Edenburg, PA716 people · 2 mi NE
- Deer Lake, PA679 people · 6 mi NW
- Auburn, PA677 people · 6 mi NW
- Renningers, PA518 people · 11 mi NW
- Shartlesville, PA384 people · 6 mi SW
- Virginville, PA382 people · 7 mi E
- Strausstown, PA341 people · 11 mi W
- Centerport, PA318 people · 5 mi S
- Mohrsville, PA302 people · 5 mi S
- Port Clinton, PA282 people · 3 mi NW
- New Ringgold, PA255 people · 10 mi N
- Lenhartsville, PA180 people · 5 mi E
- McKeansburg, PA152 people · 9 mi N
- Summit Station, PA148 people · 11 mi W
- Landingville, PA137 people · 9 mi NW
- Schubert, PA38 people · 12 mi W
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 Hamburg's climate
What is the coldest month in Hamburg?
January, with a normal high of 38°F and a normal low of 20°F. The warmest is July (85°F by day, 64°F at night).
Does it snow in Hamburg?
Yes: 21 inches in a normal year, falling on 13 days with 0.1 inch or more, the most in February (7.1 inches).
What is the rainiest month in Hamburg?
July, with 5.15 in of precipitation in a normal year; the driest is February with 2.73 in.
What plant hardiness zone is Hamburg in?
The USDA's 2023 map puts Hamburg in zone 7a in ZIP code 19526, the nearest ZIP area.
How late can frost come in Hamburg?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Blue Marsh Lake, PA12 miles from this station, 51.5°F a year
- Reading, PA13 miles from this station, 53.7°F a year
- Rodale Research Center, PA14 miles from this station, 51.5°F a year
- Mahanoy City, PA21 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