Frostburg, Maryland climate: Normal weather by month, frost dates and records
Frostburg's normal year runs from 19°F January nights to 79°F July afternoons, with 45.2 inches of precipitation and 72 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.2°C, January lows of −7°C, July highs of 26°C, 1,148 mm of precipitation a year.
- NOAA stationFrostburg 2
- Station IDUSC00183415
- Location39.66°N 78.94°W
- Elevation2,170 ft (661 m)
- Population6,972
On October 23, the normal high in Frostburg is 58°F and the normal low 38°F, and the chance of measurable rain or snow is 36%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Frostburg.
- Jan 34° 19°
- Feb 37° 20°
- Mar 46° 26°
- Apr 59° 37°
- May 68° 47°
- Jun 75° 55°
- Jul 79° 59°
- Aug 78° 58°
- Sep 72° 52°
- Oct 60° 41°
- Nov 49° 31°
- Dec 38° 24°
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 Frostburg each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 19°F. The most precipitation falls in May (5.18 in), the least in November (2.92 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 34°F | 19°F | 26.2°F | 3.36 | 19.0 | 15 | <1 | 28 | 9 h 40 min |
| February | 37°F | 20°F | 28.6°F | 3.03 | 19.0 | 13 | <1 | 25 | 10 h 40 min |
| March | 46°F | 26°F | 36.3°F | 3.97 | 14.9 | 13 | <1 | 23 | 11 h 50 min |
| April | 59°F | 37°F | 48.1°F | 4.00 | 1.8 | 14 | <1 | 10 | 13 h 10 min |
| May | 68°F | 47°F | 57.4°F | 5.18 | 0.0 | 16 | <1 | 1 | 14 h 20 min |
| June | 75°F | 55°F | 65.3°F | 4.61 | 0.0 | 14 | <1 | <1 | 15 h |
| July | 79°F | 59°F | 69.4°F | 3.70 | 0.0 | 12 | 1 | <1 | 14 h 40 min |
| August | 78°F | 58°F | 68.1°F | 3.55 | 0.0 | 11 | <1 | <1 | 13 h 50 min |
| September | 72°F | 52°F | 61.8°F | 4.21 | 0.0 | 11 | <1 | <1 | 12 h 30 min |
| October | 60°F | 41°F | 50.6°F | 3.25 | 0.4 | 11 | <1 | 4 | 11 h 10 min |
| November | 49°F | 31°F | 40.0°F | 2.92 | 4.0 | 11 | <1 | 17 | 10 h |
| December | 38°F | 24°F | 30.9°F | 3.43 | 13.0 | 13 | <1 | 26 | 9 h 20 min |
| Year (annual) | 58°F | 39°F | 48.6°F | 45.21 | 72.1 | 153 | 1 | 132 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 1°C | −7°C | −3.2°C | 85 mm | 48 cm |
| February | 3°C | −7°C | −1.9°C | 77 mm | 48 cm |
| March | 8°C | −3°C | 2.4°C | 101 mm | 38 cm |
| April | 15°C | 3°C | 8.9°C | 102 mm | 5 cm |
| May | 20°C | 8°C | 14.1°C | 132 mm | 0 cm |
| June | 24°C | 13°C | 18.5°C | 117 mm | 0 cm |
| July | 26°C | 15°C | 20.8°C | 94 mm | 0 cm |
| August | 26°C | 15°C | 20.1°C | 90 mm | 0 cm |
| September | 22°C | 11°C | 16.6°C | 107 mm | 0 cm |
| October | 16°C | 5°C | 10.3°C | 83 mm | 1 cm |
| November | 9°C | 0°C | 4.4°C | 74 mm | 10 cm |
| December | 3°C | −5°C | −0.6°C | 87 mm | 33 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00183415; 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 Frostburg?
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 USC00183415.
When is the last frost in Frostburg?
In Frostburg, the last spring frost (32°F) comes after April 29 in half of years and after May 15 in one year in ten; the first autumn frost comes before October 18 in half of years and before October 5 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 15; 9 in 10 after April 14
- First autumn frost, half of years before
- October 181 year in 10 before October 5; 9 in 10 before November 1
NOAA puts the median frost-free season at 171 days, and the season without a hard freeze (28°F) at 196 days.
A hard freeze (28°F) comes after April 17 in half of springs and before October 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Frostburg in zone 6b in ZIP code 21543, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Frostburg's NOAA station is in zone 6b: the coldest night of a typical year reaches −3°F (30 complete years).
Frost dates for every NOAA station in Maryland · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00183415; 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 in Frostburg?
In a normal year in Frostburg, 1 day a year reaches 90°F, 132 nights fall to 32°F or colder and 153 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 132a normal year
- Days that stay below freezing
- 43high of 32°F or less
- Days with 0.01 inch of precipitation
- 153a normal year
- Days with 1 inch of snow or more
- 21a normal year
The highest temperature in this station's record (since 1972) is 96°F, on July 17, 1988; the lowest is −26°F, on January 22, 1985.
The wettest calendar year on that record is 2018, with 74.58 in; the snowiest season is 1995–96, with 179.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00183415; records: ACIS (NOAA Regional Climate Centers), station USC00183415. Records use complete months only; a month missing more than three days is left out.
How sunny is Frostburg?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Frostburg, 3.9 kWh per square metre a day. July is the sunniest month (77%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.9 |
| February | 66% | 2.7 |
| March | 66% | 3.7 |
| April | 69% | 4.8 |
| May | 69% | 5.3 |
| June | 75% | 6.0 |
| July | 77% | 5.9 |
| August | 76% | 5.2 |
| September | 74% | 4.2 |
| October | 70% | 3.1 |
| November | 69% | 2.2 |
| December | 62% | 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 Frostburg need?
A normal year in Frostburg brings 6,396 heating degree days, 19% more than the median U.S. place (5,373), and 434 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 2,508 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,203 | 0 |
| February | 1,021 | 0 |
| March | 890 | 0 |
| April | 512 | 5 |
| May | 259 | 25 |
| June | 72 | 80 |
| July | 16 | 152 |
| August | 26 | 122 |
| September | 141 | 45 |
| October | 451 | 5 |
| November | 752 | 0 |
| December | 1,056 | 0 |
| Year (annual) | 6,396 | 434 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00183415. 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.
Has Frostburg been warmer than normal lately?
2025 averaged 49.5°F, 0.9°F above the 1991-2020 normal of 48.6°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.4°F | +1.8°F | 39.66 | 31.6 |
| 2022 | 48.8°F | +0.2°F | 46.95 | 44.6 |
| 2023 | 50.9°F | +2.3°F | 37.22 | 15.4 |
| 2024 | 51.8°F | +3.2°F | 42.48 | – |
| 2025 | 49.5°F | +0.9°F | 43.37 | 35.9 |
Over 48 complete years from 1973 to 2025, the station's annual mean temperature rose at a fitted 4.5°F per century (+0.25°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00183415; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Frostburg's climate compare?
Frostburg is warmer than 0 of the other 25 places with their own NOAA record in Maryland, and wetter than 10. Across the 7,247 U.S. stations with normals, its annual mean of 48.6°F is warmer than 34%.
In the Köppen classification computed from these normals, Frostburg 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 Frostburg share this climate record?
10 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.
- Berlin, PA1,947 people · 18 mi N
- Salisbury, PA683 people · 10 mi NW
- Eckhart Mines, MD521 people · 2 mi E
- Grahamtown, MD385 people · 1 mi SE
- Shaft, MD298 people · 3 mi S
- Wellersburg, PA207 people · 7 mi NE
- Vale Summit, MD79 people · 3 mi SE
- Callimont, PA53 people · 10 mi N
- National, MD48 people · 3 mi S
- Clarysville, MD13 people · 3 mi SE
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 Frostburg's climate
What is the coldest month in Frostburg?
January, with a normal high of 34°F and a normal low of 19°F. The warmest is July (79°F by day, 59°F at night).
Does it snow in Frostburg?
Yes: 72 inches in a normal year, falling on 41 days with 0.1 inch or more, the most in January (19.0 inches).
What is the rainiest month in Frostburg?
May, with 5.18 in of precipitation in a normal year; the driest is November with 2.92 in.
What plant hardiness zone is Frostburg in?
The USDA's 2023 map puts Frostburg in zone 6b in ZIP code 21543, the nearest ZIP area. By the same method at Frostburg's NOAA station, the coldest night of a typical year reaches −3°F (30 years, 1991-2020): zone 6b.
How late can frost come in Frostburg?
In half of years the last 32°F night comes after April 29; in one year in ten it comes after May 15. Waiting until May 15 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maryland climateThe statewide normals and every place in the state
- Cumberland, MD10 miles from this station, 53.7°F a year
- Meyersdale, PA10 miles from this station, 47.1°F a year
- Savage River Dam, MD15 miles from this station, 49.8°F a year
- Keyser, WV17 miles from this station, 52.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made