Baltimore MD Average Temperatures by Month

The numbers here tell you how hot and cold the weather usually is in Baltimore, Maryland during each month of the year.

The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Baltimore, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Baltimore, 2010 to 2019
High °F	Low °F		High °C	Low °C
42	25	January	6	-4
46	27	February	8	-3
54	34	March	12	1
67	45	April	20	7
76	56	May	25	13
85	64	June	29	18
89	69	July	32	21
86	66	August	30	19
81	61	September	27	16
69	49	October	20	9
56	36	November	13	2
48	32	December	9	0
67	47	Year	19	8

30-year temperature averages for Baltimore, 1991 to 2020
High °F	Low °F		High °C	Low °C
43	25	January	6	-4
46	27	February	8	-3
55	34	March	13	1
67	44	April	19	6
76	53	May	24	12
84	63	June	29	17
89	68	July	32	20
87	66	August	30	19
80	59	September	27	15
68	47	October	20	8
57	37	November	14	3
48	30	December	9	-1
67	46	Year	19	8

Days of Hot Weather in Baltimore

Baltimore regularly gets 90-degree Fahrenheit weather during summer. As well, a day with temperatures in the 90s can happen as early as April or as late as October.

The thermometer sometimes reaches 100 °F (38 °C) here. The temperature has climbed to 100 or more on an average of one day a year.

Days per month in Baltimore of at least 70, 80 or 90 °F
	70 °F 21 °C	80 °F 27 °C	90 °F 32 °C
January	0	0	0
February	1	0	0
March	4	1	0
April	11	3	0
May	22	11	2
June	29	23	7
July	31	29	13
August	31	27	8
September	27	14	3
October	13	3	0
November	3	0	0
December	1	0	0
Year	172	111	34

How Often Baltimore Has Cold Temperatures

The coldest winter nights at Baltimore get down to 0 °F (-18 °C) or less. But temperatures that low are rare, happening on average just once a decade.

Baltimore typically has 11 days a year when the temperature never rises above freezing. Frosty days can occur anytime from December to March, but are most common in January.

Days per month on average in Baltimore when the minimum temperature drops to 32, 20, or 10 °F or below
	10 °F -12 °C	20 °F -8 °C	32 °F 0 °C
January	2	9	24
February	1	6	21
March	0	2	14
April	0	0	2
May	0	0	0
June	0	0	0
July	0	0	0
August	0	0	0
September	0	0	0
October	0	0	1
November	0	0	10
December	0	4	21
Year	3	21	93

Baltimore Temperatures: Averages by Month

Days of Hot Weather in Baltimore

How Often Baltimore Has Cold Temperatures

References

More on Weather in Maryland