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 Details for Carroll Co. Frost Advisory
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 Details for Howard Co. Frost Advisory
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 Details for Montgomery Co. Frost Advisory
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Frost Advisory FROST ADVISORY - Carroll Co.  - Frederick Co.  - Harford Co.  - Howard Co.  - Montgomery Co.  - Northern Baltimore Co.  - Southern Baltimore Co. & City    

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Radar Legend
Bless America
Early Morning OBSERVATIONS: Its early morning,dawn/a few clouds and it feels cold outside. The temperature has been falling for the last few hours. There is a calm from the south south west. Visibility is about 10 mile(s). The barometer has been steady over the last hour. So far no measurable precipition has been observed today. A new daily low temperature record of 41.2° was set today at 06:46. The previous record set in 2006 was 47.8°F.
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METRIC | IMPERIAL
Updated: 22-Sep-2020 @ 6:47am  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.9°F than last hour.

41.3°F

Cold
High Today
47.3°F
00:00 		Low Today
41.2°F
06:46
Yest High
69.2°F
15:12 		Yest Low
44.2°F
06:43
Station High
91.8°F
2010* 		Station Low
47.8°F
2006*
BWI High
99°F
1931 		BWI Low
37°F
1962
* This Station's Records Since 8/2004
Station Record Low
Dawn, A few clouds Dawn, A few clouds

Calm Wind:  SSW
0.0
Gusting to:
 0.0 mph
Current Rain Rain:
0.00 in
Fire Weather Index: LOW Current FWI:4
Fire Danger:
17.5 of 232
Today

Today: Mostly sunny, with a high near 73. Northwest wind 5 to 9 mph.
Mostly Sunny
 Tonight

Tonight: Partly cloudy, with a low around 51. West wind around 8 mph.
Partly Cloudy
 Wednesday

Wednesday: Partly sunny, with a high near 81. West wind 6 to 9 mph.
Partly Sunny
Hi 73 °F Lo 51 °F Hi 81 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.5°F since last hour. 39.2°F
Last Hour: Decreased 0.5°F since last hour. 0.5°F
High 00:15: 42.6°F
Low 06:36: 38.9°F
Record High: 87.6°F on
16-Aug-2017
Record Low: -34.2°F on
17-Nov-2005
Wetbulb: 40.4°F
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.04 in
Sep Rain: 1.18 in
Sep to Date
  Avg:10 		0.00 in
Sep to Date
  Diff from Avg:10 		Over 1.18 in for the month 1.18 in
Sep Avg: 4.05 in
Diff from Avg: Under 2.87 in for the month 2.87 in
Season:1 30.47 in
YTD
  Avg:11 		30.30 in
YTD
  Diff from Avg:11 		Over 0.17 in for the year 0.17 in
Last Rain
Time/Date: 		18-Sep-2020
at 04:39
110 rain days in 2020
4 days in September
3 days since last rain
Current: SSW  0.0 mph
1Hr Average: Calm
Wind Run: 1.23 miles
Wind Gust
Current: 0.0 mph
Today: 5.8 mph 01:32
Month: 26.5 mph 2-Sep
Year: 55.2 mph 23-Feb
Record Gust: 92.0 mph
19-Sep-2003
Sunlight:
12 hrs 8 min
22 sec
of Sunlight Today Which is
2 min 32 sec shorter than
yesterday
 (Noon) graph (Midnight)

Waxing Crescent
Waxing Crescent, 4 days, 23 hours, 48 minutes in cycle
31%
Illuminated
Humidity Barometer
Current: Increased 1% since last hour. 92%
Last Hour: Increased 1% since last hour. 1%
High 06:38: 92%
Low 00:00: 82%
Record High: 100%
29-Sep-2005
Record Low: 0%
29-Nov-2014
Current: Falling 0.5 inHg/hr 1023.9 inHg
Last Hour: Steady
High 00:00: 1027.2
Low 06:46: 1023.8
Record High: 1045.5 inHg
28-Feb-2015
Record Low: 963.4 inHg
29-Oct-2012
Heating Degree Days Snow3 Wind Chill Air
Today: 5.3
Sep: 41.6
2020 to Date: 2497.5
Cooling Degree Days
2020 to Date: 1388.7
Today: 0.00 in
Yesterday: 0.00 in
Sep Snow: No Change 0.00 in
Sep Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in September
0 snow days this season.2
First Snow of Season:
--
Average 1st Snow:
Current: 41.3°F
Low 06:46: 41.2°F
Yesterday: 44.2°F
Record: -25.1°F
21-Jan-2019
Metropolitan Baltimore, MD

Quality Index6:
39

Good

Last Updated:
Tue, 22 Sep 2020 06:45:08 EDT

Density:
1.28 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   6.7 @ 10:07
Sep-22

6.2 		Sep-23

5.9 		Sep-24

5.7
High Yest:   863.0 @ 12:57
Sun Hours Today:
00:00
   This Month: 95:41 Hrs
Rise: 06:55  Set: 19:03
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Early Morning
YTD Avg Temp: 60.8°F
Sunrise: 06:55
Sunset: 19:03
Moonrise: 12:57
Moonset: 21:57
Full Moon: 01-Oct-2020
New Moon: 19:32 UTC
16-Oct-2020
Updated at Midnight
Current ET: 0.01 in
7-Days Rain: 0.04 in
7-Days ET: 0.97 in
7-Day: 0.932 in water in deficit of what evaporated in last 7 days. 0.932 in
September: 1.63 in water in deficit of what evaporated this month. 1.63 in
HIGHS: LOWS:
138.9°F
3-Nov-2019 		-0.0°F
1-Mar-2011
Daytime Records
  102.9°F
07-Jul-2012 		  0.5°F
23-Nov-2019
Nitetime Records
  90.3°F
08-Jul-2012 		  -0.0°F
01-Mar-2018
ICN:11 | S3C2:9 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:100%
METRIC | IMPERIAL
Updated: 22-Sep-2020 @ 6:47am  
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 7AM and 7PM.   4 Updated at Noon Eastern Standard Time.   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 22 of just the month of September for this station since 2005.   11 Historical average rain this season to day 22 of September for this station since 2005.   12 NWS Zone Forecast (MDZ005).
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Mostly sunny, with a high near 73. Northwest wind 5 to 9 mph.
Mostly Sunny

Hi 73 °F 		NWS forecast: Mostly sunny, with a high near 73. Northwest wind 5 to 9 mph.
Local station forecast:12 Mostly clear. Cold with lows in the lower 40s. North winds around 5 mph. 		Tonight

Tonight: Partly cloudy, with a low around 51. West wind around 8 mph.
Partly Cloudy

Lo 51 °F 		NWS forecast: Partly cloudy, with a low around 51. West wind around 8 mph.
 NWS Short Term Weather Forecast
Wednesday

Wednesday: Partly sunny, with a high near 81. West wind 6 to 9 mph.
Partly Sunny
 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 56. West wind 3 to 7 mph.
Mostly Cloudy
 Thursday

Thursday: Partly sunny, with a high near 81. Light southwest wind.
Partly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 57.
Mostly Cloudy
 Friday

Friday: Mostly sunny, with a high near 79.
Mostly Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 60.
Partly Cloudy
 Saturday

Saturday: A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Chance
Showers
Hi 81 °F Lo 56 °F Hi 81 °F Lo 57 °F Hi 79 °F Lo 60 °F Hi 77 °F
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