Heat Advisory HEAT ADVISORY - NW Suffolk  - SW Suffolk  - Nassau

Regional Radar Infrared Satellite
Radar/Satellite images courtesy of Weather Underground and NOAA.
spacer
METRIC | IMPERIAL
Updated: 07/21/2017 @ 4:25 pm  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.7°F than last hour.

89.1°F

Heat Index:  93.3°F
---
High Today
90.0°F
2:28 PM
Low Today
70.7°F
5:48 AM
Yest High
91.0°F
11:40 AM
Yest Low
69.8°F
5:35 AM
Rec* High
101.0°F
1991
Rec* Low
58.0°F
2001
* Records from Weather Underground
Overcast Overcast

Wind from W Wind:  W
4.0

Gusting to:
0.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
20.1 of 100
Tonight

Mostly Cloudy
Mostly Cloudy
Saturday

Partly Cloudy
Hot!
Partly Cloudy
Hot!
Saturday
night
Rain likely
Rain likely
Low: 73° High: 90° Low: 72°

Click here for full Forecast
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1°F since last hour. 68.6°F
Last Hour: Decreased 1°F since last hour. 1°F
High 10:55 AM: 72.3°F
Low 4:11 PM: 65.4°F
Record High: 82.4°F on
Aug-13-2016
Record Low: -14.1°F on
Feb-13-2016
Wetbulb: 75.3°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.14 in
Jul Rain: 0.79 in
Jul Avg: 1.58 in
Diff from Avg: Under 0.79 in for the month 0.79 in
Season:1 16.81 in
Last YTD:1 14.01 in
Last Rain
Time/Date:
Jul-16-2017
at 6:24 AM
81 rain days in 2017
8 days in July
5 days since last rain
Current: W  4.0 mph
1Hr Average: 0.3 mph
Wind Run: 14.93 miles
Wind Gust
Current: 0.0 mph mph
Today: 14.1 mph 4:10 PM
Month: 23.9 mph Jul-1
Year: 46.0 mph Mar-14
Record Gust: 48.3 mph
Jan-23-2016
Sunlight:
14 hrs 40 min
of Sunlight Today
graph 61.1% 38.9%
Which is
1 min 37 sec Shorter
Than Yesterday
 
NEW MOON, 27 days, 17 hours, 57 minutes in cycle
0%
Illuminated
Humidity Barometer
Current: Decreased 3% since last hour. 51%
Last Hour: Decreased 3% since last hour. 3%
High 6:10 AM: 91%
Low 4:04 PM: 46%
Record High: 100%
Aug-27-2013
Record Low: 0%
Jan-26-2015
Current: Falling 0.003  inHg/hr 29.825 inHg
Last Hour: Steady
High 9:56 AM: 29.893 in.
Low 3:44 PM: 29.822 in.
Record High: 30.829 inHg
Nov-26-2015
Record Low: 28.919 inHg
Mar-14-2017
Cooling Degree Days Snow3 Heat Index Air
Today: 7.4
Jul: 187.8
2017 to Date: 347.3
Heating Degree Days
2017 to Date: 3275.2
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:
Jan-7-2017
Average 1st Snow:
25 of Dec
Current: 93.3°F
High 2:28 pm: 96.0°F
Yesterday: 99.6°F
Record: 115.7°F
Aug-13-2016
Quality
Index6:

77


Moderate
Density:
1.144 kg/m3
Current UV Index Current Solar Energy9
3.1
Sunburn in
36 Minutes
Highest:
1:14 PM
7.1
439 W/m2
68%
W/m2 SI
High Today:
12:07 PM
916  W/m2 Record:
1454 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 50.4°F
Sunrise: 5:38 am
Sunset: 8:18 pm
Moonrise: 3:45 am
Moonset: 6:31 pm
Full Moon: Jul-09-2017
New Moon: 09:46 UTC
Jul-23-2017
Updated at Midnight
Current ET: 0.29 in
7-Days Rain: 0.14 in
7-Days ET: 1.15 in
7-Day:  1.012 in water in deficit of what evaporated in last 7 days. 1.012 in
July:  2.74 in water in deficit of what evaporated this month. 2.74 in
HIGHS: LOWS:
94.5°F
Aug-14-2016
-2.0°F
Feb-14-2016
Daytime Records
  87.4°F
Jun-13-2017
  6.3°F
Feb-14-2016
Nitetime Records
  79.5°F
Aug-14-2016
  3.4°F
Feb-14-2016
ICN:18 | S3C2:1 | Ajax 3.xx
ISS:Ok |
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Manually measured, amount shown may not be current. Snow melting from rain gauge will show as rain when temperatures are above freezing..   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 Courtesy of New York State Department of Environmental Conservation.   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.  
  Weather Forecast  -   Outlook Tonight & Saturday
Tonight

Mostly Cloudy
Mostly Cloudy
Low: 73°
WXSIM forecast: Mostly cloudy. Low 73°. Wind west-southwest around 7 mph, gusting to 15 mph, in the evening, becoming 2 mph after midnight.
Saturday

Partly Cloudy
Hot!
Partly Cloudy
Hot!
High: 90°
WXSIM forecast: Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. Hot. High 90°. Heat index up to 95°. UV index up to 8. Wind south-southeast around 3 mph.
  Short Term Weather Forecast
Saturday
night
Rain likely
Rain likely
Sunday

Fog a.m.
Fog a.m.
Sunday
night
Chance rain
Chance rain
Monday

Chance rain
Chance rain
Monday
night
Fog
Fog
Tuesday

Fog a.m.
Fog a.m.
Tuesday
night
Fog late
Fog late
Low: 72° High: 76° Low: 64° High: 84° Low: 67° High: 80° Low: 58°