|Local forecast by|
"City, ST" or zip code
|Maps of when the first frost and freezing temperatures usually occur in Autumn.|
Clear skies and light winds allow for ideal radiational cooling at night.
Frost becomes possible when the observed temperatures (taken at 2m (6ft) off the ground)
drop into the Mid 30s (36°F).
A thresholds map of the average date of the end of the growing season
is shown below. This map serves as a basis for issuing frost/freeze products
and can also be accessed via our Thresholds Page on our website (see left column). In addition, high resolution
images below the threshold map depict seasonal climatology of average
first frost and freeze dates.
|Map of the average date of the end of the growing season used by the National Weather Service in State College as a basis for Frost/Freeze products. NOTE: Landscape position (valley, ridge top, hillside) may cause local dates to vary a few days (early/late) from those indicated. This is evident in the high resolution maps below.
|High resolution map of the Average first frost|
|High resolution map of the Average first freeze|
2007 Weather Events/Features:
- Strong Winds crossed the region on Dec 23rd, causing damage in spots.
- Ice and Snow Storm of December 13th
- First Clipper of the Season, December 5th
- Snow-Sleet-Freezing Rain-Rain of December 2nd and 3rd
- Snow Arrives in Central Pennsylvania (Nov 17-18)
- 2007 Holm Award
- New Snowfall/Winter reporting criteria for SkyWarn Spotters!
- October 2007 Warmest October Ever at Williamsport and Harrisburg
- Arctic Sea Ice Below Normal
- October 2007 will be the hottest October ever!
- October's (Record) Hot Weather
- Severe Storms and Tornado of 26 Sept 2007.
- Severe Thunderstorms - August 30, 2007
- Severe Thunderstorms - August 25, 2007
- Large Hail Producing Storms in Lycoming County - August 17th
- EF1 Tornado in Eastern Centre County (Aug 7th)
- Thunderstorms produced flooding, hail and wind damage on Sunday Evening (July 29th)
- Pulse severe storms on Saturday (July 28th)
- A Brief Reprieve From The Dry Summer Weather (July 20th)
- How dry has it been? (Mid July)
- Hot Weather Arrives in Central Pennsylvania (July 10th)
- Heavy Rain and Hail around Harrisburg on July 5th
- Office view of the State College fireworks display
- Pulse Storms in Record Heat of June 27th, 2007
- Widespread Severe Weather Event, June 19th, 2007
- Severe Thunderstorms in Northeast Flow - Day 2 - June 13th, 2007
- Severe Thunderstorms in Northeast Flow - Day 1 - June 12th, 2007
- Severe Squall Line Event June 8th, 2007
- Severe (Hail) Storms of 27 May 2007.
- NWS Open House Severe Weather Event, 12 May 2007.
- Severe (Hail) Storms of 10 May 2007.
- Late Season Nor'Easter (16 March).
- The Valentine's Day Storm (13-14 February).
- Late Start to the Snow - Winter 2006-07.
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