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High pressure should provide relatively dry weather over the region through Sunday. Easterly flow and a wave coming out of the Gulf should increase the chance of rain late Sunday into Monday. The pattern over North America is changing, the ensembles show a trough attempting to establish itself over eastern North America with a ridge over northwestern Canada. A series of waves will carve out the trough bringing unsettled weather to the region next week.
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| Daily Records for November 21st for Both Sites. | | Town | Date
MM-DD | Record Max | Record Max Year(s) | Record Min | Record Min Year(s) | Record Precip | Record Precip Year(s) | Record Snowfall | Record Snowfall Year(s) | | Williamsport | 11-21 | 79 | 1900 | 12 | 1951 | 1.62 | 1952 | 1 | 1978 | | Harrisburg | 11-21 | 74 | 1900 | 19 | 1951 | 1.78 | 1952 | 1.4 | 2008 |
| Daily Normals for November 21st for Both Sites. | | Town | Date
MM-DD | Normal Max | Normal Mean | Normal Min | Normal Precip | Normal Snowfall | Normal HDDs | Normal CDDs | | Williamsport | 11-21 | 47 | 39 | 31 | 0.12 | 0.1 | 26 | 0 | | Harrisburg | 11-21 | 50 | 43 | 35 | 0.12 | 0.1 | 22 | 0 |
| Town | Month | Day | Sunrise | Sunset | Time Zone | | Williamsport | November | 21 | 7:04 AM | 4:44 PM | EST | | Harrisburg | November | 21 | 7:00 AM | 4:46 PM | EST |
See/Get more records and normals on our local Climate Page
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2009 Weather Features:
- Early (Earliest) Snow - October 15-16, 2009
- Heavy-Wet Snow Possible Thursday and Friday
- September 2009 Climate Summary
- Local Observer wins Thomas Jefferson Award
- August 2009 Climate Summary for Harrisburg and Williamsport
- Severe Weather Event - August 20, 2009
- Severe Weather of 9 August 2009
- Heavy Rains and Flooding - July 23, 2009
- Severe Weather of Sat July 11th
- Severe Weather Events - June 25&26, 2009
- Early (Earliest) Snow - October 15-16, 2009
- Heavy-Wet Snow Possible Thursday and Friday
- September 2009 Climate Summary
- Local Observer wins Thomas Jefferson Award
- August 2009 Climate Summary for Harrisburg and Williamsport
- Severe Weather Event - August 20, 2009
- Severe Weather Event - June 20, 2009
- Severe Weather Event - June 9, 2009
- Severe Weather Event - May 16, 2009
- Wet pattern of early May
- Heat Wave sets Record Highs
- Unusually warm weather in store.
- York County Straight Line Wind Damage Sunday afternoon Mar 29, 2009
- Tornado Damage in Lancaster County 29 March 2009
- Coastal Low and Deep Snow SE, March 1st-2nd, 2009
- Strong Winds, Feb 11th-12th, 2009
- Local Heavy Snow in Lancaster, PA Feb 3rd-4th, 2009
- Snow and Ice Storm, Jan 27-28th
- Low Temperatures Saturday 17 Jan
- State College Represents NWS at the PA Farm Show
- Heavy Snow in Central PA, Jan 10th
- Ice Storm then Heavy Rain in the South, Jan 6th-8th
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