Excessive Heat Warning EXCESSIVE HEAT WARNING - Western Chester  - Western Montgomery  - Eastern Chester  - Eastern Montgomery

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METRIC | IMPERIAL
Updated: 07/20/2019 @ 13:00  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.6°F than last hour.

91.0°F

Heat Index:  109.2°F
Feels like:  109°F
---
High Today
91.1°F
12:58
Low Today
75.4°F
03:13
Yest High
92.2°F
15:58
Yest Low
74.2°F
00:00
Sta* High
91.8°F
2017
Sta* Low
58.5°F
2018
* This Station's Records Since 12/2013
Official Record High
clear clear

Wind from WSW Wind:  WSW
4.2

Gusting to:
3.0 mph
Current Rain Rain:
0.00 in
Fire Weather Index: MINIMAL Current FWI:4
Fire Danger:
0.4 of 232
This
Afternoon
This Afternoon: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Sunday

Sunday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Hi 96 °F Lo 78 °F Hi 96 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: No Change 79.0°F
Last Hour: No Change 0°F
High 12:35: 81.7°F
Low 06:27: 73.7°F
Record High: 83.5°F on
7/2/2014
Record Low: -12.5°F on
1/31/2019
Wetbulb: 82.3°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 2.74 in
Jul Rain: 6.84 in
Jul to Date
  Avg:10
1.97 in
Jul to Date
  Diff from Avg:10
Over 4.87 in for the month 4.87 in
Jul Avg: 4.80 in
Diff from Avg: Over 2.04 in for the month 2.04 in
Season:1 34.45 in
YTD
  Avg:11
23.69 in
YTD
  Diff from Avg:11
Over 10.76 in for the year 10.76 in
Last Rain
Time/Date:
7/18/2019
at 16:48
90 rain days in 2019
11 days in July
1 day since last rain
Current: WSW  4.2 mph
1Hr Average: 3.2 mph
Wind Run: 33.66 miles
Wind Gust
Current: 3.0 mph mph
Today: 14.0 mph 10:32
Month: 33.0 mph 17-Jul
Year: 46.0 mph 25-Feb
Record Gust: 46.0 mph
2/15/2015
Sunlight:
14 hrs 39 min
of Sunlight Today
graph 61% 39%
Which is
1 min 32 sec Shorter
Than Yesterday
 
Morning Crescent, 17 days, 21 hours, 45 minutes in cycle
6%
Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 68%
Last Hour: Decreased 1% since last hour. 1%
High 03:20: 97%
Low 11:10: 67%
Record High: 99%
12/23/2013
Record Low: 0%
3/14/2018
Current: Falling 0.025  inHg/hr 29.838 inHg
Last Hour: Falling slowly
High 10:27: 29.886 in.
Low 00:22: 29.832 in.
Record High: 30.838 inHg
2/28/2015
Record Low: 28.975 inHg
10/29/2017
Cooling Degree Days Snow3 Heat Index Air
Today: 6.9
Jul: 218.4
2019 to Date: 462.2
Heating Degree Days
2019 to Date: 3158.2
Today: 0.00 in
Yesterday: 0.00 in
Jul Snow: No Change 0.00 in
Jul 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 July
0 snow days this season.2
First Snow of Season:
//
Average 1st Snow:
Current: 109.2°F
High 12:54: 111.7°F
Yesterday: 114.5°F
Record: 119.7°F
7/2/2014
Quality
Index6:

53


Moderate
Density:
1.14 kg/m3
Current UV Index Current Solar Energy9
8.1
Sunburn in
14 Minutes
Highest:
12:57
8.2
1371 W/m2
100%
W/m2 SI
High Today:
12:57
1375  W/m2
Record:
1770 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 51.4°F
Sunrise: 05:49
Sunset: 20:28
Moonrise: 22:29
Moonset: 09:11
Full Moon: 7/16/2019
New Moon: 03:12 UTC
8/1/2019
Updated at Midnight
Current ET: 0.25 in
7-Days Rain: 2.74 in
7-Days ET: 1.64 in
7-Day:  1.102 in water in excess of what evaporated in last 7 days. 1.102 in
July:  2.71 in water in excess of what evaporated this month. 2.71 in
HIGHS: LOWS:
96.4°F
7/23/2016
-6.2°F
1/31/2019
Daytime Records
  93.7°F
7/03/2018
  5.0°F
1/07/2014
Nitetime Records
  85.1°F
7/09/2014
  0.1°F
2/01/2019
ICN:5 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:97%
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 or at completion of storm.   4 Updated at Noon Eastern 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 the EPA AQI Feed.   9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.   10 Historical average only to day 20 of just the month of July for this station since 2013.   11 Historical average rain this season to day 20 of July for this station since 2013.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Hi 96 °F
NWS forecast: A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 106. West wind around 9 mph. Chance of precipitation is 20%.
Local station forecast: Increasing clouds with little temp change.
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 78 °F
NWS forecast: A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 78. Heat index values as high as 105. West wind 3 to 8 mph. Chance of precipitation is 20%.
 NWS Short Term Weather Forecast
Sunday

Sunday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday

Monday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Monday
Night
Monday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Tuesday

Tuesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Hi 96 °F Lo 74 °F Hi 86 °F Lo 67 °F Hi 81 °F Lo 62 °F Hi 81 °F
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