Climateby Month

Baltimore vs Frederick weather

Baltimore, MD and Frederick, MD · 44 mi apart

July highs: 89°F in Baltimore, 84°F in Frederick (Baltimore is 5°F warmer). January highs: 43°F and 39°F (Baltimore is 4°F warmer). Baltimore has about 121 wet days a year, Frederick about 119. Muggy days: about 60 a year in Baltimore, about 46 in Frederick. Snow: 19.3 in a year in Baltimore, 31.4 in in Frederick.

Baltimore, MD

20°40°60°80°100° January: normal high 43°F (6°C), low 25°F (-4°C) 43° 25° February: normal high 46°F (8°C), low 27°F (-3°C) March: normal high 55°F (13°C), low 34°F (1°C) April: normal high 67°F (19°C), low 44°F (7°C) May: normal high 76°F (24°C), low 53°F (12°C) June: normal high 84°F (29°C), low 63°F (17°C) July: normal high 89°F (32°C), low 68°F (20°C) 89° 68° August: normal high 87°F (31°C), low 66°F (19°C) September: normal high 80°F (27°C), low 59°F (15°C) October: normal high 68°F (20°C), low 47°F (8°C) November: normal high 57°F (14°C), low 37°F (3°C) December: normal high 48°F (9°C), low 30°F (-1°C) JFMAMJJASOND

Best months: April, May

Frederick, MD

20°40°60°80°100° January: normal high 39°F (4°C), low 25°F (-4°C) 39° 25° February: normal high 43°F (6°C), low 26°F (-3°C) March: normal high 52°F (11°C), low 33°F (1°C) April: normal high 64°F (18°C), low 43°F (6°C) May: normal high 73°F (23°C), low 53°F (12°C) June: normal high 80°F (27°C), low 62°F (17°C) July: normal high 84°F (29°C), low 66°F (19°C) 84° 66° August: normal high 83°F (28°C), low 65°F (18°C) September: normal high 76°F (24°C), low 58°F (14°C) October: normal high 65°F (18°C), low 47°F (8°C) November: normal high 53°F (12°C), low 36°F (2°C) December: normal high 44°F (7°C), low 30°F (-1°C) JFMAMJJASOND

Best months: May

Which city for what

  • Milder winters: Baltimore (January high 43°F vs January high 39°F)
  • Cooler summers: Frederick (July high 84°F vs July high 89°F)
  • Less humid: Frederick (46 muggy days vs 60 muggy days)
  • Less snow: Baltimore (19.3 in vs 31.4 in)
  • Longer growing season: Baltimore (244 frost-free days vs 218 frost-free days)

Listed only where the difference is at least 3°F in highs, 10 days a year or 3 in of snow.

Season by season

SeasonAvg high BaltimoreAvg high FrederickWet days BaltimoreWet days Frederick
Winter (Dec-Feb)46°F42°F3030
Spring (Mar-May)66°F63°F3433
Summer (Jun-Aug)87°F82°F3130
Fall (Sep-Nov)68°F65°F2626

Side by side over a year

BaltimoreFrederick
Hot days (90°F+)3413
Freezing nights9498
Muggy days6046
Comfortable days7683
Precipitation45.0 in47.9 in
Snowfall19.3 in31.4 in
Frost dateslast Mar 24, first Nov 21last Apr 2, first Nov 6
Daylight in June / December14.9 h / 9.4 h14.9 h / 9.4 h
Best monthsApril, MayMay

Day counts from each city's daily records, 1991-2020. Comfortable days: highs 65-80°F and dew point under 60°F.

Month by month

MonthHigh BaltimoreHigh FrederickWet days BaltimoreWet days Frederick
January43°F39°F1010
February46°F43°F910
March55°F52°F1110
April67°F64°F1111
May76°F73°F1211
June84°F80°F1111
July89°F84°F1010
August87°F83°F1010
September80°F76°F99
October68°F65°F99
November57°F53°F98
December48°F44°F1010

Both charts use the same temperature scale.

Where the numbers come from

  • Baltimore, MD: temperature from Baltimore Wash Intl Airport (USW00093721), 9.4 mi SSW of the city center; precipitation from Baltimore Wash Intl Airport (USW00093721). NOAA 1991-2020 normals and daily records.
  • Frederick, MD: temperature from Damascus 3 Ssw (USC00182336), 14 mi SE of the city center; precipitation from Damascus 3 Ssw (USC00182336). NOAA 1991-2020 normals and daily records.

Every station for each city, including humidity and frost, is listed on the city page. Methodology.