Heat Advisory HEAT ADVISORY - Collin County
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METRIC | IMPERIAL
Updated: 21-Aug-2019 @ 1:55pm  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.3°F than last hour.

96.0°F

Heat Index:  106.9°F
Dangerously Hot
High Today
97.7°F
1:28 PM
Low Today
78.8°F
7:08 AM
Yest High
101.2°F
3:47 PM
Yest Low
79.2°F
7:15 AM
Sta* High
102.7°F
2010
Sta* Low
69.7°F
2012
Avg* High
94.7°F
for Today
Avg* Low
75.1°F
for Today
* Based on this station's measurements taken since 10/2009
Cloudy, Dry Cloudy, Dry
Wind from SE Wind:  SE
2.7

Gusting to:
5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
23.5 of 100
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny
Tonight

Tonight: Mostly Clear
Mostly Clear
Thursday

Thursday: Sunny
Sunny
Hi 98 °F Lo 80 °F Hi 98 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.7°F since last hour. 73.8°F
Last Hour: Decreased 0.7°F since last hour. 0.7°F
High 12:47 PM: 75.0°F
Low 12:12 AM: 71.2°F
Record High: 81.5°F on
Aug-17-2017
Record Low: -3.6°F on
Jan-27-2014
Wetbulb: 80.4°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.25 in
Aug Rain: 2.13 in
Aug to Date
  Avg:10
2.18 in
Aug to Date
  Diff from Avg:10
Under 0.05 in for the month 0.05 in
Aug Avg: 2.52 in
Diff from Avg: Under 0.39 in for the month 0.39 in
Season:1 36.51 in
YTD
  Avg:11
27.99 in
YTD
  Diff from Avg:11
Over 8.52 in for the year 8.52 in
Last Rain
Time/Date:
Aug-14-2019
at 8:11 AM
69 rain days in 2019
3 days in August
6 days since last rain
Current: SE  2.7 mph
1Hr Average: 4.7 mph
Wind Run: 50.37 miles
Wind Gust
Current: 5.0 mph mph
Today: 15.0 mph 1:25 PM
Month: 23.0 mph Aug-17
Year: 46.0 mph Mar-12
Record Gust: 63.3 mph
Mar-29-2017
Sunlight:
13 hrs 10 min 53 sec
of Sunlight Today

Which is
1 min 52 sec shorter
than yesterday

(Noon) pie chart (Midnight)

Legend
Waning Gibbous
Waning Gibbous, 20 days, 15 hours, 46 minutes in cycle
67% Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 49%
Last Hour: Decreased 1% since last hour. 1%
High 6:56 AM: 81%
Low 1:20 PM: 46%
Record High: 100%
Oct-6-2009
Record Low: 13%
Dec-11-2017
Current: Falling 0.023  inHg/hr 29.895 inHg
Last Hour: Falling slowly
High 11:13 AM: 29.955 in.
Low 5:27 AM: 29.872 in.
Record High: 30.844 inHg
Jan-1-2018
Record Low: 29.323 inHg
Jan-21-2017
Cooling Degree Days Snow3 Heat Index Air
Today: 10.9
Aug: 469.0
2019 to Date: 1892.3
Heating Degree Days
2019 to Date: 1513.5
Today: 0.00 in
Yesterday: 0.00 in
Aug Snow: No Change 0.00 in
Aug 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 August
0 snow days this season.2
First Snow of Season:
Jan-19-2019
Average 1st Snow:
17 of Dec
Current: 106.9°F
High 1:25pm: 109.8°F
Yesterday: 113.5°F
Record: 121.5°F
Aug-12-2016
Quality
Index6:

79


Moderate

Density:
1.13 kg/m3

aqi
aqi
Current UV Index Current Solar Energy9
7.0
Sunburn in
16 Minutes
Highest:
1:26 PM
7.4
953 W/m2
95%
W/m2 SI
High Today:
1:42 PM
960  W/m2
Record:
1480 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 66.6°F
Sunrise: 6:53 am
Sunset: 8:07 pm
Moonrise: 11:13 pm
Moonset: 12:12 pm
Full Moon: Aug-15-2019
New Moon: 10:38 UTC
Aug-30-2019
Updated at Midnight
Current ET: 0.26 in
7-Days Rain: 0.25 in
7-Days ET: 2.22 in
7-Day:  1.974 in water in deficit of what evaporated in last 7 days. 1.974 in
August:  3.86 in water in deficit of what evaporated this month. 3.86 in
HIGHS: LOWS:
109.4°F
Aug-3-2011
11.8°F
Jan-17-2018
Daytime Records
  108.3°F
Aug-10-2015
  16.3°F
Feb-02-2011
Nitetime Records
  96.8°F
Aug-04-2011
  13.1°F
Feb-02-2011
ICN:19 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.6 | RCP:99%
Countdown to Fall
Autumn Equinox begins September 23rd at 2:50am CDT
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.   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 Texas Commission on Environmental Quality.   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 21 of just the month of August for this station since 2009.   11 Historical average rain this season to day 21 of August for this station since 2009.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny

Hi 98 °F
NWS forecast: Mostly sunny, with a high near 98. Heat index values as high as 105. South southeast wind 5 to 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 80 °F
NWS forecast: Mostly clear, with a low around 80. Heat index values as high as 102. South southeast wind 5 to 10 mph.
 NWS Short Term Weather Forecast
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday

Friday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Saturday

Saturday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Hi 98 °F Lo 78 °F Hi 97 °F Lo 78 °F Hi 95 °F Lo 77 °F Hi 96 °F
Version 6.95b - 03-Apr-2019 - Script by: Scott of BurnsvilleWeatherLIVE.com
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