Cumberland Valley Weather

81°F

Mechanicsburg, PA USA

Updated: 19-May-2012 3:20pm

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Radar/Satellite images courtesy of Weather Underground.

METRIC | IMPERIAL

Updated: 05/19/2012 @ 3:20:00 pm

Temperature

Current Conditions

Forecast

Currently Outside: 81.3°F Feels like: 81°F Warm
High Today 81.8°F 3:11 PM	Low Today 46.8°F 6:21 AM
Rec* High 95.0°F 1962	Rec* Low 35.1°F 1973
* Records from Weather Underground

	It is Sunny, Dry
	Wind: NNE 2.9 Gusting to: 1.0
	Rain: 0.00 in

Tonight Patchy Fog Lo 52 °F	Sunday Patchy Fog Hi 82 °F	Sunday Night Chance Showers Lo 58 °F
Click here for full Forecast
Chandler Burning Index		Currently: 28.9 at 3:20 PM

Dew Point

Liquid Precipitation

Wind

Sun/Moon

Dew Point:	57.3°F
In Last Hour:	+1.2°F
High Dew Point:	61.9°F at 12:29 PM
Low Dew Point:	42.8°F at 6:21 AM
Record Dew Point:	84.4°F Jul-22-2011
Wetbulb:	66.9°F

Today:	0.00 in
Yesterday:	0.00 in
Last 7 Days:	1.61 in
May Rain:	3.69 in
May Avg:	6.68 in
Diff from Avg:	-2.99 in
Rain Season:¹	13.50 in
Last YTD Rain:¹	22.99 in
Last Rain Time/Date:	5/15/2012 at 7:56 AM
41 rain days in 2012
10 days in May 3 days since last rain

Currently:	NNE at 2.9 mph
Gusting To:	1.0
Max Gust:	11.0@ 12:07 PM
1Hr Average:	3.2 mph
Max Gust This Month:	34.5 mph on May 10
Wind Run:	19.97 miles

Daylight:

14:32

+00:02
Minutes

1%
Illuminated

Humidity

Barometer

Humidity:	44 %
In Last Hour:	0%
High Today	89% at 4:38 AM
Low Today	39% at 1:21 PM

Current:	30.090 inHg
In Last Hour:	Steady
High Today:	30.168 at 8:11 AM
Low Today:	30.090 at 3:19 PM

Cooling Degree Days

Snow³

Heat Index

Air

Today:	0.0
May:	12.4
2012 to Date:	17.3
Heating Degree Days
2012 to Date:	1994.3

Today:	0.00 in
Yesterday:	0.00 in
May:	0.00 in
May Avg:	0.00 in
Diff from Avg:	0.00 in
Season Total:²	12.00 in
Snow Depth:	0.00 in
0 snow day in May
5 snow days this season.²
First Snow of Season: 10/29/2011
Average 1st Snow: November 21, based on last 2 years.

Current:	81.3°F
Today:	82.4°F 3:07 PM
Yesterday:	76.2°F
Record:	130.3°F Jul-22-2011

Quality
Index⁶:
51

Moderate

Density:
1.174 kg/m³

Current UV Index

Current Solar Energy⁹

5.0

Sunburn in

22 Minutes

Highest:
12:49 PM
7.4

798 W/m²
78%
W/m² ⇒ SI

High Today:
12:53 PM
958 W/m² Record:1471 W/m²

Almanac

Irrigation Index⁵

Station All Time Records

Cloud Level

Currently:	Afternoon
YTD Avg Temp:	48.3°F
Sunrise:	5:48 AM
Sunset:	8:20 PM
Moonrise:	4:50 AM
Moonset:	7:16 PM
Full Moon:	6 May 2012
New Moon:	23:48 UTC 20 May 2012

Updated at Midnight
Current ET:	0.26 in
7-Days Rain:	1.61 in
7-Days ET:	1.21 in
7-Day:	0.401 in
May:	1.19 in
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HIGHS:	LOWS:
102.0°F Jul-22-2011	3.0°F Jan-24-2011
Daytime Records
93.2°F 31-May-2011	15.6°F 22-Jan-2011
Nitetime Records
83.8°F 22-Jul-2011	9.9°F 23-Jan-2011
ICN:0 \| S3C2:1 ISS:Ok \| CON:5.2 \| RCP:98%

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 AIRNow and is updated hourly between the hours of 6AM and Midnight. ⁹

NWS Weather Forecast - Outlook Tonight & Sunday

Tonight

Patchy
Fog
Lo 52 °F

NWS forecast: Patchy fog after 4am. Otherwise, clear, with a low around 52. Northeast wind around 5 mph becoming calm.
WXSIM forecast: Mostly clear. Warm. High 83°. UV index up to 8. Wind north-northeast around 4 mph.

Sunday

Patchy
Fog
Hi 82 °F

NWS forecast: Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming east between 6 and 9 mph.
WXSIM forecast: Clear. Low 56°. Wind southeast near calm.

NWS Short Term Weather Forecast

Sunday
Night
Chance Showers. Chance for Measurable Precipitation 30%

Chance
Showers
Lo 58 °F

Monday

Showers Likely. Chance for Measurable Precipitation 60%