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Dangerous heat wave to expand east early this week, affecting 170 million people. Details here Chevron right

Marriottsville, MD

75°F
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Marriottsville

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2
Extreme Heat Warning

June 24 - August 7

Tue 6/24

100° /74°
0%
Very hot and very humid with hazy sunshine; stay hydrated with temperatures remaining dangerously high
alerts

Extreme Heat Warning

11:00 AM Tuesday - 9:00 PM Tuesday

RealFeel®107°

RealFeel Shade™101°

Max UV Index11 (Extreme)

WindNW 6 mph

Wed 6/25

99° /74°
40%
Clouds and sun; very hot, humid, a t-storm around in the afternoon; extreme heat can be dangerous; storms can bring downpours and localized damaging wind gusts
alerts

Extreme Heat Watch

11:00 AM Wednesday - 9:00 PM Wednesday

RealFeel®109°

RealFeel Shade™102°

Max UV Index11 (Extreme)

WindWNW 6 mph

Thu 6/26

90° /70°
70%
Hot and humid with sunshine mixing with some clouds; a couple of heavy afternoon thunderstorms; watch for flooding on streets and poor drainage areas

RealFeel®100°

RealFeel Shade™94°

Max UV Index11 (Extreme)

WindNE 5 mph

Fri 6/27

82° /71°
55%
Considerable cloudiness and humid; an afternoon thunderstorm

RealFeel®89°

RealFeel Shade™86°

Max UV Index3 (Moderate)

WindESE 7 mph

Sat 6/28

88° /70°
55%
Uncomfortably humid with intervals of clouds and sunshine; an afternoon thunderstorm in a couple of spots

RealFeel®99°

RealFeel Shade™94°

Max UV Index5 (Moderate)

WindSW 6 mph

Sun 6/29

89° /69°
42%
Uncomfortably humid with sunshine and some clouds; an afternoon thunderstorm in parts of the area

RealFeel®101°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindNW 5 mph

Mon 6/30

92° /70°
71%
Partly sunny with a couple of thunderstorms, especially late; hot and very humid

RealFeel®103°

RealFeel Shade™99°

Max UV Index11 (Extreme)

WindSW 6 mph

Tue 7/1

88° /67°
78%
Variable cloudiness with thunderstorms, especially late; humid

RealFeel®96°

RealFeel Shade™91°

Max UV Index8 (Very High)

WindWSW 8 mph

Wed 7/2

86° /65°
1%
Partly sunny and humid

RealFeel®93°

RealFeel Shade™86°

Max UV Index11 (Extreme)

WindWNW 7 mph

Thu 7/3

87° /62°
1%
Mostly sunny and less humid

RealFeel®91°

RealFeel Shade™84°

Max UV Index11 (Extreme)

WindN 6 mph

Fri 7/4

84° /65°
25%
Sunny to partly cloudy

RealFeel®91°

RealFeel Shade™83°

Max UV Index11 (Extreme)

WindNNE 4 mph

Sat 7/5

85° /64°
0%
Partial sunshine

RealFeel®89°

RealFeel Shade™82°

Max UV Index11 (Extreme)

WindSSW 7 mph

Sun 7/6

87° /64°
70%
Cloudy with periods of rain in the afternoon

RealFeel®87°

RealFeel Shade™85°

Max UV Index5 (Moderate)

WindSW 7 mph

Mon 7/7

88° /64°
25%
Sun and some clouds

RealFeel®93°

RealFeel Shade™87°

Max UV Index11 (Extreme)

WindNNE 4 mph

Tue 7/8

84° /66°
20%
Sun and some clouds

RealFeel®88°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindS 6 mph

Wed 7/9

88° /67°
55%
Partly sunny with a couple of showers in the afternoon

RealFeel®93°

RealFeel Shade™87°

Max UV Index11 (Extreme)

WindSSW 8 mph

Thu 7/10

88° /67°
20%
Partly sunny and humid

RealFeel®97°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindSSW 4 mph

Fri 7/11

87° /66°
20%
Partly sunny and humid

RealFeel®98°

RealFeel Shade™94°

Max UV Index11 (Extreme)

WindWNW 2 mph

Sat 7/12

88° /67°
5%
Humid with plenty of sunshine

RealFeel®98°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindSSW 4 mph

Sun 7/13

89° /68°
25%
Partly sunny and humid

RealFeel®97°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindSW 6 mph

Mon 7/14

90° /67°
10%
Sunny, hot and humid

RealFeel®98°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindNNW 5 mph

Tue 7/15

87° /68°
25%
Partly sunny and humid

RealFeel®96°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindS 5 mph

Wed 7/16

89° /68°
25%
Rather cloudy and uncomfortably humid

RealFeel®100°

RealFeel Shade™97°

Max UV Index4 (Moderate)

WindW 4 mph

Thu 7/17

87° /67°
65%
Humid with considerable cloudiness; a couple of afternoon showers and a thunderstorm

RealFeel®91°

RealFeel Shade™90°

Max UV Index3 (Moderate)

WindENE 7 mph

Fri 7/18

83° /66°
70%
A thick cloud cover and humid with showers and thunderstorms, mainly early in the day

RealFeel®88°

RealFeel Shade™88°

Max UV Index3 (Moderate)

WindE 7 mph

Sat 7/19

83° /67°
56%
A couple of showers in the morning; otherwise, continued cloudy and very humid

RealFeel®93°

RealFeel Shade™93°

Max UV Index3 (Moderate)

WindESE 4 mph

Sun 7/20

86° /68°
20%
Uncomfortably humid with clouds yielding to sun

RealFeel®97°

RealFeel Shade™93°

Max UV Index10 (Very High)

WindW 5 mph

Mon 7/21

86° /68°
20%
Partly sunny and uncomfortably humid

RealFeel®96°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindWSW 5 mph

Tue 7/22

89° /67°
25%
Mostly cloudy and uncomfortably humid

RealFeel®101°

RealFeel Shade™101°

Max UV Index4 (Moderate)

WindS 1 mph

Wed 7/23

89° /68°
55%
A couple of showers in the morning; otherwise, mostly cloudy and very humid

RealFeel®97°

RealFeel Shade™96°

Max UV Index3 (Moderate)

WindNNW 6 mph

Thu 7/24

84° /67°
20%
Humid with clouds and sun

RealFeel®88°

RealFeel Shade™84°

Max UV Index5 (Moderate)

WindNNW 6 mph

Fri 7/25

84° /67°
40%
Mostly sunny and humid; a thunderstorm in spots in the afternoon

RealFeel®94°

RealFeel Shade™89°

Max UV Index10 (Very High)

WindNNW 2 mph

Sat 7/26

85° /66°
25%
Cloudy

RealFeel®84°

RealFeel Shade™84°

Max UV Index3 (Moderate)

WindNNE 8 mph

Sun 7/27

83° /66°
25%
Considerable cloudiness

RealFeel®83°

RealFeel Shade™82°

Max UV Index5 (Moderate)

WindNE 7 mph

Mon 7/28

83° /67°
25%
Mainly cloudy

RealFeel®86°

RealFeel Shade™85°

Max UV Index3 (Moderate)

WindNNE 2 mph

Tue 7/29

85° /67°
5%
Plenty of sun

RealFeel®92°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindSW 5 mph

Wed 7/30

88° /66°
20%
Mostly sunny

RealFeel®91°

RealFeel Shade™86°

Max UV Index10 (Very High)

WindNNW 9 mph

Thu 7/31

84° /64°
25%
Less humid with increasing cloudiness

RealFeel®85°

RealFeel Shade™83°

Max UV Index7 (High)

WindE 5 mph

Fri 8/1

87° /68°
5%
Sunny and humid

RealFeel®91°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindSW 10 mph

Sat 8/2

90° /66°
10%
Hot and less humid with sunshine

RealFeel®92°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindNNW 9 mph

Sun 8/3

83° /63°
20%
Increasing cloudiness

RealFeel®87°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindNNW 7 mph

Mon 8/4

84° /65°
63%
Mostly cloudy with a couple of showers and a thunderstorm; humid

RealFeel®92°

RealFeel Shade™91°

Max UV Index4 (Moderate)

WindSSW 6 mph

Tue 8/5

84° /67°
63%
Mostly cloudy and humid with a couple of showers and a thunderstorm

RealFeel®93°

RealFeel Shade™91°

Max UV Index4 (Moderate)

WindSW 4 mph

Wed 8/6

87° /64°
39%
Some sun with a thunderstorm in spots; humid

RealFeel®94°

RealFeel Shade™90°

Max UV Index9 (Very High)

WindSW 6 mph

Thu 8/7

86° /62°
40%
Partial sunshine with a thunderstorm around; humid

RealFeel®91°

RealFeel Shade™89°

Max UV Index9 (Very High)

WindSW 8 mph

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