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Monthly
Precipitation
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°Fahrenheit
Monthly Historical Averages
National, MD
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May
Average Temperature
High
20°
Feels 20
Low
10°
Feels 8
Average Precipitation
12 Days
Rain amount
67.4mm
Snow amount
0.1cm
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
26°
21
13°
22
13°
23
11°
24
17°
25
20°
26
21°
27
24°
28
22°
29
22°
30
23°
31
22°
Forecast
Wednesday, May 20, 2026
Day
26°
Feels 26
Wind
19 km/h W
Gust
28 km/h
Humidity
59%
P.O.P
40%
Rain
~1 mm
Night
12°
Feels 11
Wind
16 km/h NE
Gust
24 km/h
Humidity
99%
P.O.P
90%
Rain
~5 mm
Historical Averages
May 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.