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Freeze Warning FREEZE WARNING - Thurmont

National Radar Regional Radar
Radar/Satellite images courtesy of National Weather Service.
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METRIC | IMPERIAL
Updated: 21-Apr-2026 @ 4:30am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 1.2°F than last hour.

32.1°F

Wind Chill:  32.1°F
---
High Today
33.5°F
1:15 AM 		Low Today
30.3°F
3:22 AM
Yest High
50.3°F
2:30 PM 		Yest Low
32.6°F
11:34 PM
Night time, Dry Night time, Dry

Wind from N Wind:  N
1.9
Gusting to:
 0.0 mph
Current Snow SnowMelt:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
6.4 of 100
Overnight

Overnight: Widespread Frost
Widespread Frost
Tuesday

Tuesday: Widespread Frost then Sunny
Widespread Frost then Sunny
Tuesday
Night
Tuesday Night: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Lo 31°F Hi 58°F Lo 45°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.6°F since last hour. 19.8°F
Last Hour: Decreased 0.6°F since last hour. -0.6°F
High 12:03 AM: 22.0°F
Low 4:28 AM: 19.5°F
Record High: 83.5°F on
16-Aug-2010
Record Low: -14.3°F on
20-Feb-2015
Wetbulb: 28.2°F
Melt Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.57 in
Apr Rain: 1.53 in
Apr to Date
  Avg:10 		6.74 in
Apr to Date
  Diff from Avg:10 		Under 5.21 in for the month 5.21 in
Apr Avg: 3.45 in
Diff from Avg: Under 1.92 in for the month 1.92 in
Season:1 9.470 in
YTD
  Avg:11 		13.89 in
YTD
  Diff from Avg:11 		Under 4.42 in for the year 4.42 in
Last Rain
Time/Date: 		19-Apr-2026
at 2:29 PM
34 rain days in 2026
8 days in April
1 day since last rain
Current: N  1.9 mph
1Hr Average: 3.4 mph
Wind Run: 8.64 miles
Wind Gust
Current: 0.0 mph
Today: 10.4 mph 3:27 AM
Month: 34.0 mph 19-Apr
Year: 44.0 mph 16-Mar
Record Gust: 44.0 mph
16-Mar-2026
Sunlight:
13 h 28 m 14 s
of Sunlight Yesterday
13 h 30 m 38 s
of Sunlight Today Which is
2 min 24 sec longer than
yesterday
13 h 33 m 2 s
of Sunlight Tomorrow
 (Noon ?>) graph (Midnight
 Legend

Waxing Crescent
Waxing Crescent, 3 days, 20 hours, 42 minutes in cycle
20%
Illuminated
Humidity Barometer
Current: Decreased 5% since last hour. 60%
Last Hour: Decreased 5% since last hour. 5%
High 3:23 AM: 66%
Low 1:14 AM: 58%
Record High: 100%
12-Apr-2008
Record Low: 12%
11-Mar-2009
Current: Rising 0.5 inHg/hr 1028.6 inHg
Last Hour: Rising slowly
High 4:29 AM: 1028.6
Low 3:05 AM: 1027.4
Record High: 1079.1 inHg
1-Mar-2015
Record Low: 964.5 inHg
30-Oct-2012
Heating Degree Days Coming Soon Wind Chill Air
Today: 5.3
Apr: 181.7
2026 to Date: 2724.7
Cooling Degree Days
2026 to Date: 26.1
Current: 32.1°F
Low 3:27 AM: 21.9°F
Yesterday: 28.0°F
Record: -26.0°F
20-Feb-2015
Quality
Index6:
35

Good
Density:
1.31 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   6.2 @ 12:57 PM
Apr-21

6.1 		Apr-22

6.4 		Apr-23

6.5
High Yest:   1065.0 @ 12:58 PM
Sun Hours Today:
00:00
   This Month: 98:35 Hrs
Rise: 6:08 am  Set: 7:41 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Early Morning
YTD Avg Temp: 39.7°F
Sunrise: 6:08 am
Sunset: 7:41 pm
Moonrise: 8:56 am
Moonset: 12:06 am
Full Moon: 01-May-2026
New Moon: 20:02 UTC
16-May-2026
Updated at Midnight
Current ET: 0.02 in
7-Days Rain: 0.57 in
7-Days ET: 0.98 in
7-Day: 0.406 in water in deficit of what evaporated in last 7 days. 0.406 in
April: 1.53 in water in excess of what evaporated this month. 1.53 in
HIGHS: LOWS:
97.3°F
13-Aug-2021 		-2.7°F
7-Jan-2014
Daytime Records
  90.3°F°F
20-Jul-2020 		  3.9°F°F
07-Jan-2014
Nitetime Records
  87.3°F°F
20-Jul-2020 		  3.9°F°F
20-Feb-2015
ICN:1 | S3C2:0 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:98%
1 Rain season: Jan 1st to Dec 31st.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by Minnesota Polution Control Agency and is updated hourly between the hours of 6AM and Midnight.   10 Historical average only to day 21 of just the month of April for this station since 2009.   11 Historical average rain this season to day 21 of April for this station since 2009.
 NWS Weather Forecast  -   Outlook Overnight & Tuesday
Overnight

Overnight: Widespread Frost
Widespread Frost

Lo 31°F 		NWS forecast: Widespread frost. Clear, with a low around 31. North wind around 3 mph.
WXSIM forecast: Clear. Cold. Low 29°. Wind north-northwest around 4 mph.
 Local station forecast: Partly cloudy with little temp change. 		Tuesday

Tuesday: Widespread Frost then Sunny
Widespread Frost then Sunny

Hi 58°F 		NWS forecast: Widespread frost before 10am. Sunny, with a high near 58. Southwest wind 1 to 7 mph.
WXSIM forecast: Mostly sunny in the morning, becoming partly cloudy in the afternoon. High 55°. UV index up to 5. Wind south-southwest around 2 mph in the morning, becoming 7 mph, gusting to 16 mph, in the afternoon.
 NWS Short Term Weather Forecast
Tuesday
Night
Tuesday Night: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Wednesday

Wednesday: Rain Showers Likely
Rain Showers Likely
Wednesday
Night
Wednesday Night: Chance Rain Showers then Partly Cloudy
Chance Rain Showers then Partly Cloudy
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Lo 45°F Hi 69°F Lo 50°F Hi 76°F Lo 53°F Hi 75°F Lo 53°F
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