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FROST ADVISORY
FROST ADVISORY ISSUED APRIL 18 AT 8:35PM CDT UNTIL APRIL 19 AT 9:00AM CDT
Effective: 2026-04-18 20:35:00 Local Time Expires: 2026-04-19 09:00:00 Local Time Issued by: NWS Chicago IL
Alert Text
* WHAT...FOR THE FROST ADVISORY, TEMPERATURES AS LOW AS 33 WILLRESULT IN FROST FORMATION. FOR THE FREEZE WATCH, SUB-FREEZING TEMPERATURES AS LOW AS 28 POSSIBLE.

* WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, NORTH CENTRAL, AND NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

* WHEN...FOR THE FROST ADVISORY, FROM MIDNIGHT CDT 1 AM EDT TONIGHT TO 9 AM CDT 10 AM EDT SUNDAY. FOR THE FREEZE WATCH, FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING.

* IMPACTS...FROST AND FREEZE CONDITIONS COULD KILL CROPS, OTHER SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR PLUMBING. FROST COULD HARM SENSITIVE OUTDOOR VEGETATION. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.
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Target Area
WINNEBAGO, BOONE, MCHENRY, LAKE, OGLE, LEE, DE KALB, KANE, DUPAGE, LA SALLE, KENDALL, GRUNDY, KANKAKEE, LIVINGSTON, IROQUOIS, FORD, NORTHERN WILL, SOUTHERN WILL, EASTERN WILL, LAKE, PORTER, NEWTON, JASPER, BENTON
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Hazardous Weather Conditions

Freeze Watch issued April 18 at 11:59PM EDT until April 21 at 10:00AM EDT

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Cloudy

66.2 F
Humidity:83%
Wind Speed:NE 5.8 mph
Barometer:29.82 in
Dewpoint:60.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 19 2026, 01:55 AM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Sunday

High 59 °F
Rain Showers Likely
Sunday
Night
Low 42 °F
Partly Cloudy
Monday

High 55 °F
Partly Sunny
Monday
Night
Low 33 °F
Mostly Clear
Tuesday

High 59 °F
Mostly Sunny
Tuesday
Night
Low 48 °F
Slight Chance of Rain
Wednesday

High 73 °F
Chance of Rain Showers
Wednesday
Night
Low 50 °F
Partly Cloudy
Thursday

High 77 °F
Mostly Sunny

Observation History for CHEVY CHASE, MARYLAND


Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:55 AM EDT NE 5.8 10.00 Cloudy -- 66.2 60.8 83% NA NA 29.82 1009.8
01:35 AM EDT 10.3 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.83 1010.2
01:15 AM EDT 3.4 10.00 NULL -- 68.0 60.8 78% NA NA 29.84 1010.5
12:55 AM EDT 0.0 10.00 Cloudy -- 66.2 60.8 83% NA NA 29.85 1010.8
12:35 AM EDT 0.0 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.85 1010.8
12:15 AM EDT 0.0 10.00 NULL -- 68.0 60.8 78% NA NA 29.86 1011.2
11:55 PM EDT E 4.7 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.84 1010.5
11:35 PM EDT E 3.4 10.00 Light Rain -- 69.8 60.8 73% NA NA 29.85 1010.8
11:15 PM EDT E 4.7 10.00 NULL -- 69.8 60.8 73% NA NA 29.85 1010.8
10:55 PM EDT 4.7 10.00 Cloudy -- 69.8 60.8 73% NA NA M
10:35 PM EDT 5.8 10.00 Mostly Cloudy -- 69.8 60.8 73% NA NA 29.83 1010.2
10:15 PM EDT SE 5.8 10.00 Mostly Cloudy -- 69.8 60.8 73% NA NA 29.82 1009.8
09:55 PM EDT SE 10.3 10.00 Clear -- 69.8 60.8 73% NA NA 29.82 1009.8
09:35 PM EDT SE 9.2 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.83 1010.2
09:15 PM EDT SE 11.4 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.82 1009.8
08:55 PM EDT SE 11.4 G 23.0 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.82 1009.8
08:35 PM EDT SE 13.9 G 20.8 10.00 Clear -- 73.4 60.8 65% NA 73.4 29.81 1009.5
08:15 PM EDT SE 9.2 G 18.3 10.00 Clear -- 73.4 60.8 65% NA 73.4 29.81 1009.2
07:55 PM EDT SE 15.0 G 20.8 10.00 Clear -- 75.2 60.8 61% NA 75.2 29.81 1009.2
07:35 PM EDT SE 11.4 G 18.3 10.00 Clear -- 77.0 60.8 57% NA 77.2 29.81 1009.2
07:15 PM EDT SE 12.8 G 19.7 10.00 Clear -- 77.0 62.6 61% NA 77.4 29.81 1009.5
06:55 PM EDT SE 12.8 G 18.3 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.81 1009.5
06:35 PM EDT G 19.7 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.82 1009.8
06:15 PM EDT SE 12.8 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.83 1010.2

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
66.2 F

FREDERICK (KFDK)

Cloudy
62.2 F

CARROLL CNTY (KDMW)

Mostly Cloudy
60.8 F

NSF THURMONT (KRSP)

NULL
57.9 F

WASH DC/DULLES (KIAD)

Partly Cloudy
64.4 F

WASHINGTON/NATL (KDCA)

Clear
64.4 F
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