Maryland climate: Statewide normals, its places and each month, NOAA 1991-2020
Maryland's statewide normal is 55.4°F a year with 45.2 inches of precipitation (NOAA nClimDiv, 1991-2020); it has warmed 2.2°F per century since 1895, and 2024 was its warmest year.
- Statewide normal temperature
- 55.4°Fyear, 1991-2020
- Statewide normal precipitation
- 45.2 inyear, 1991-2020
- Last five years against normal
- +1.2°F2021-2025 mean 56.6°F
- Places with normals
- 4326 Census places, 17 other stations
What is Maryland's weather like each month?
Statewide, July is the warmest month and January the coldest. Each month has its own page with the warmest and coolest places that month:
- Jan43°25°
- Feb46°27°
- Mar54°33°
- Apr66°43°
- May74°53°
- Jun83°62°
- Jul87°67°
- Aug85°65°
- Sep78°58°
- Oct68°46°
- Nov56°36°
- Dec47°29°
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 43°F | 25°F | 33.9°F | 3.19 |
| February | 46°F | 27°F | 36.2°F | 2.76 |
| March | 54°F | 33°F | 43.6°F | 3.96 |
| April | 66°F | 43°F | 54.3°F | 3.52 |
| May | 74°F | 53°F | 63.4°F | 4.03 |
| June | 83°F | 62°F | 72.1°F | 4.21 |
| July | 87°F | 67°F | 76.7°F | 4.40 |
| August | 85°F | 65°F | 74.8°F | 4.18 |
| September | 78°F | 58°F | 68.2°F | 4.35 |
| October | 68°F | 46°F | 57.0°F | 3.79 |
| November | 56°F | 36°F | 46.3°F | 3.17 |
| December | 47°F | 29°F | 38.1°F | 3.68 |
Source: NOAA NCEI nClimDiv statewide series (Climate at a Glance); data files. Statewide values are area-weighted from a 5 km grid of station data, so they differ from the simple average of a state's stations.
Has Maryland been warmer than normal?
5 of the 5 complete years since 2021 ran warmer than the 1991-2020 statewide normal of 55.4°F. The record since 1895 rises at a fitted 2.2°F per century; the warmest year was 2024 (57.5°F).
| Year | Mean | Against normal |
|---|---|---|
| 2021 | 56.8°F | +1.5°F |
| 2022 | 55.7°F | +0.3°F |
| 2023 | 57.3°F | +1.9°F |
| 2024 | 57.5°F | +2.1°F |
| 2025 | 55.6°F | +0.3°F |
Source: NOAA NCEI nClimDiv statewide annual series.
Where is it warmest, wettest and snowiest in Maryland?
Among the places PlainClimate covers, Snow Hill has the warmest year (59.3°F) and Sines Deep Creek the coolest (47.1°F); Oakland is the wettest (50.8 in) and Hagerstown the driest (35.6 in), and Oakland gets the most snow (105 in).
| Place | Year | July high | January low | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|
| Baltimore | 56.2°F | 89°F | 25°F | 45.0 | 19 | April 10 |
| Frederick | 57.0°F | 89°F | 27°F | 43.5 | – | April 2 |
| Rockville | 56.2°F | 87°F | 27°F | 41.3 | – | April 1 |
| Hagerstown | 55.4°F | 87°F | 25°F | 35.6 | – | April 7 |
| Annapolis | 57.7°F | 86°F | 30°F | 44.0 | – | March 23 |
| Salisbury | 56.9°F | 88°F | 28°F | 47.5 | 8 | April 10 |
| Laurel | 57.1°F | 89°F | 26°F | 47.5 | – | April 5 |
| Beltsville | 55.9°F | 87°F | 25°F | 44.0 | 16 | April 10 |
| Cumberland | 53.7°F | 87°F | 23°F | 39.2 | 29 | April 15 |
| Oxon Hill | 57.1°F | 88°F | 27°F | 46.8 | – | April 3 |
| Aberdeen | 55.2°F | 86°F | 25°F | 47.1 | – | April 10 |
| Damascus | 54.0°F | 84°F | 25°F | 47.9 | 31 | April 14 |
| Glenn Dale | 54.9°F | 89°F | 22°F | – | – | April 22 |
| Stevensville | 57.1°F | 87°F | 29°F | 46.9 | – | March 29 |
| Frostburg | 48.6°F | 79°F | 19°F | 45.2 | 72 | April 29 |
| Ocean City | 56.0°F | 84°F | 28°F | 42.6 | – | April 7 |
| Chestertown | 56.0°F | 87°F | 27°F | 46.0 | 17 | April 3 |
| Smithsburg | 52.3°F | 86°F | 22°F | – | – | April 25 |
| Emmitsburg | 53.0°F | 85°F | 22°F | 46.6 | 28 | April 22 |
| Snow Hill | 59.3°F | 89°F | 30°F | 47.4 | 10 | April 10 |
| Solomons | 58.9°F | 88°F | 30°F | – | – | March 22 |
| Oakland | 49.7°F | 81°F | 18°F | 50.8 | 105 | May 6 |
| Mechanicsville | 55.2°F | 85°F | 25°F | 48.1 | 15 | April 17 |
| Upper Marlboro | 56.0°F | 88°F | 25°F | 45.0 | 16 | April 9 |
| Sharpsburg | 52.9°F | 86°F | 21°F | 43.5 | – | April 26 |
| Vienna | 58.3°F | 90°F | 28°F | – | – | April 8 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
What are Maryland's all-time weather records?
The official state records, reviewed by NOAA's State Climate Extremes Committee: from 109°F to −40°F.
| Record | Value | Where | When |
|---|---|---|---|
| Highest temperature | 109°F | Cumberland (tied 6 times; the latest shown) | July 10, 1936 |
| Lowest temperature | −40°F | Oakland | January 13, 1912 |
| Most precipitation in 24 hours | 14.75 in | Jewell (nr. Friendship) | July 26, 1897 |
| Most snow in 24 hours | 31 in | Clear Spring 1ENE | March 29, 1942 |
| Deepest snow on the ground | 54 in | Frostburg 2 | March 15, 1993 |
Source: NOAA NCEI State Climate Extremes Committee records.
Which large cities in Maryland have no climate record of their own?
These 15 cities of 50,000 or more have no NOAA record with 1991-2020 normals under their own name; each page compares the nearest records, with their distance and elevation.
- Columbia105,871 people
- Germantown90,521 people
- Waldorf82,541 people
- Silver Spring82,129 people
- Ellicott City73,737 people
- Glen Burnie72,772 people
- Gaithersburg70,686 people
- Bethesda67,403 people
- Dundalk65,441 people
- Bowie58,421 people
- Severn58,041 people
- Bel Air South57,702 people
- Towson57,683 people
- Aspen Hill53,752 people
- Wheaton52,172 people
Which other NOAA stations in Maryland keep normals?
17 stations in Maryland that are not a town's own record keep 1991-2020 normals too: reservoirs and dams, parks and forests, research farms, remote sites and the second stations of towns (those are shown on the town's page). Each with its normal yearly mean:
- Annapolis Police Barracks58.8°F
- Assateague58.1°F
- Catoctin Mountain Park53.4°F
- Conowingo Dam55.4°F
- Cylburn56.1°F
- Dalecarlia Reservoir56.2°F
- Hagerstown (1 mi E)54.1°F
- Maryland Science Center Baltimore59.1°F
- Millers (4 mi NE)53.6°F
- National Arboretum DC58.3°F
- Patuxent River Naval Air Station58.3°F
- Royal Oak (2 mi SSW)58.0°F
- Salisbury (2 mi N)58.4°F
- Salisbury station58.7°F
- Savage River Dam49.8°F
- Sines Deep Creek47.1°F
- St Inigoes Webster NOLF58.4°F
Source: NOAA NCEI 1991-2020 normals for each station.
Next
- Frost dates in MarylandLast spring and first autumn frost at every station
- Every stateCompare the statewide normals
- Snow Hill59.3°F a year, 47.4 in of precipitation
- Sines Deep Creek47.1°F a year,
- Oakland49.7°F a year, 50.8 in of precipitation
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