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Mount Harmon, MD

13°F
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Mount Harmon, MD Weather
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EXPERT FORECAST NEW
AccuWeather Meteorologists
Updated January 20, 2026
Baltimore: Watching for a major snowstorm this weekend

A storm will gather a vast zone of snow and ice over the south-central United States Friday. During the weekend, around the same time Arctic air moves in, snow is forecast to overspread the Baltimore area Saturday afternoon and continue at varying rates into Sunday. There is the potential for a heavy accumulation of snow, with widespread travel problems. Little to no natural melting is likely during and following the storm.

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Risk to Life and Property

The level of risk due to high winds, flooding rain, surge, and tornado potential for an active tropical storm

Risk to Life and Property

Rainfall

Projected rainfall totals for the duration of an active tropical system

Rainfall

Wind Flow

This interactive map provides a visual representation of wind speed and direction over the next 24 hours

Wind Flow

Maximum Sustained Winds

The projected maximum sustained winds of an active tropical system

Maximum Sustained Winds

Maximum Wind Gusts

The projected maximum wind gusts of an active tropical system

Maximum Wind Gusts
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REALFEEL® GUIDE
°F
Extraordinarily Dangerous Heat
133° to 140°

Extraordinary caution advised. Very high danger of dehydration, heat stroke, heat exhaustion and heat cramps.

Stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Outdoor activity is dangerous and potentially life-threatening.

Loose fitting, light colored cotton clothing is recommended.

Extremely Dangerous Heat
125° to 132°

Extreme caution advised. High danger of dehydration, heat stroke, heat exhaustion and heat cramps.

Stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Most outdoor activity is dangerous and potentially life-threatening.

Loose fitting, light colored cotton clothing is recommended.

Very Dangerous Heat
116° to 124°

Significant caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps.

Stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Most outdoor activity is dangerous, especially for older adults, infants, and those with sensitive medical conditions.

Loose fitting, light colored cotton clothing is recommended.

Dangerous Heat
108° to 115°

Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

Stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Minimize outdoor activity, especially for older adults, infants, and those with sensitive medical conditions.

Loose fitting, light colored cotton clothing is recommended.

Quite Hot
101° to 107°

Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

Older adults, infants, and those with sensitive medical conditions, should minimize outdoor activity and stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Loose fitting, light colored cotton clothing is recommended.

Hot
90° to 100°

Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

Older adults, infants, and those with sensitive medical conditions, should minimize outdoor activity and stay indoors in air conditioning or a well-ventilated area away from direct sun exposure.

Loose fitting, light colored cotton clothing is recommended.

Very Warm
82° to 89°

Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.

Loose fitting, light colored cotton clothing is recommended.

Pleasant
63° to 81°

Most consider this temperature range ideal.

Cool
53° to 62°

Light jacket or sweater may be appropriate.

Chilly
40° to 52°

Jacket or sweater is recommended.

Cold
25° to 39°

Coats and hats are appropriate, consider gloves and a scarf.

Very Cold
10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

Quite Cold
-10° to 9°

Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.

Limited outdoor activity recommended. Wear winter clothing that covers as much of the body as possible.

Bitterly Cold
-24° to -11°

Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.

Outdoor activity can be dangerous and should be limited. Wear thick winter clothing that covers as much of the body as possible.

Dangerous Cold
-43° to -25°

Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.

Outdoor activity can be dangerous and should be limited. Wear thick winter clothing that covers nearly all exposed skin.

Very Dangerous Cold
-69° to -44°

Great caution advised. Frostbite to exposed skin within 1 minute. Hypothermia likely without protective clothing.

Outdoor activity is very dangerous and potentially life threatening. Stay in a heated area or, if outdoor activity is necessary, it should be limited to a few minutes and only if all skin surfaces are covered.

Extremely Dangerous Cold
-90° to -70°

Extreme caution advised. Frostbite to exposed skin within 30 seconds. Hypothermia likely without protective clothing.

Outdoor activity is extremely dangerous and life threatening. Stay in a heated area or, if outdoor activity is necessary, it should be limited to a few minutes and only if all skin surfaces are covered.

Extraordinarily Dangerous Cold
-120° to -91°

Extraordinary caution advised. Frostbite to exposed skin within 20 seconds. Hypothermia likely without protective clothing.

Outdoor activity is extraordinarily dangerous and life threatening. Stay in a heated area.

Risk to Life and Property
Some Moderate High Extreme
Rainfall
1 2 4 > 8 in
Max Sustained Winds
39 56 74 96 111 130 > 157 mph
Max Wind Gusts
40 60 80 100 120 140 > 160 mph
Storm Surge
1 3 6 10 > 15 ft

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