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The persistent mean trough over the Mid-Atlantic and northeast states will be replaced by a upper level ridge migrating eastward from the plains. This pattern will bring some of the warmest air of the season to the area, with the increasing heat and humidity arriving on schedule with the official start of astronomical summer. A typical summertime pattern should unfold next week as the upper ridge shifts westward back into the southern plains and the main Jet Stream takes up its usual residence along the United States/Canadian border.
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| Daily Records for June 19th 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 | 06-19 | 96 | 1929 | 45 | 1986 | 2.02 | 1934 | 0 | 2002 2001 | | Harrisburg | 06-19 | 98 | 1994 | 52 | 1954 1946 1909 | 1.87 | 1996 | 0 | 2002 2001 |
| Daily Normals for June 19th for Both Sites. | | Site | Date
MM-DD | Normal Max | Normal Mean | Normal Min | Normal Precip | Normal Snowfall | Normal HDDs | Normal CDDs | | Williamsport | 06-19 | 81 | 70 | 59 | 0.14 | 0 | 1 | 5 | | Harrisburg | 06-19 | 82 | 73 | 63 | 0.12 | 0 | 0 | 8 |
| Town | Month | Day | Sunrise | Sunset | Time Zone | | Williamsport | June | 19 | 5:35 AM | 8:44 PM | EDT | | Harrisburg | June | 19 | 5:38 AM | 8:40 PM | EDT |
See/Get more records and normals on our local Climate Page
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