Williamson, PA
Unincorporated community in Franklin County, Pennsylvania
Williamson is a small unincorporated community in Franklin County, Pennsylvania. It is 5.0 miles N of St. Thomas, the nearest town. Its ZIP code is 17252.
Williamson at a glance
- State
- Pennsylvania
- County
- Franklin County
- ZIP code
- 17252
- Nearest town
- St. Thomas (5.0 mi)
- Time zone
- America/New York
- Coordinates
- 39.8531, -77.7978
Weather in Williamson now
Loading the National Weather Service forecast…
Williamson weather by the hour
Williamson weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Williamson.
This week in Williamson
Sunrise, sunset and moon in Williamson
What is the weather usually like in Williamson?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 23°F average low
- 43.5 inprecipitation per year · 1,106 mm
- 30.8 insnowfall per year · 78 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Williamson: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CHAMBERSBURG 1 ESE, PA US (USC00361354), adjusted for the elevation of Williamson.
Williamson weather month by month
Sunrise and sunset in Williamson through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:29 AM | 5:12 PM | 9 h 43 min |
| February | 7:01 AM | 5:48 PM | 10 h 46 min |
| March | 7:20 AM | 7:19 PM | 11 h 58 min |
| April | 6:31 AM | 7:50 PM | 13 h 19 min |
| May | 5:54 AM | 8:20 PM | 14 h 26 min |
| June | 5:40 AM | 8:42 PM | 15 h 2 min |
| July | 5:54 AM | 8:40 PM | 14 h 46 min |
| August | 6:21 AM | 8:09 PM | 13 h 47 min |
| September | 6:51 AM | 7:21 PM | 12 h 30 min |
| October | 7:20 AM | 6:33 PM | 11 h 12 min |
| November | 6:54 AM | 4:56 PM | 10 h 2 min |
| December | 7:23 AM | 4:48 PM | 9 h 24 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Williamson?
Williamson has a hot-summer humid continental climate. The warmest month is July, with an average high of 85°F (29°C), and the coldest is January, with average lows of 23°F (-5°C).
It gets about 43.5 inches (1,106 mm) of precipitation a year. The wettest month is September and the driest is February. Snow is common: about 31 inches fall in an average year.
The best time to visit Williamson is May–June and August–September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Williamson
The closest live webcam is Guilford Township, 5.3 miles E of Williamson.
Webcams: Windy.com. Distances in a straight line from Williamson.
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Map of Williamson, PA
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Williamson Street View
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Open in Google Maps ›Towns near Williamson
Other communities near Williamson
Questions about Williamson
Where is Williamson, PA?
Williamson is an unincorporated community in Franklin County, Pennsylvania, 5.0 miles N of St. Thomas.
What county is Williamson in?
Williamson is in Franklin County, Pennsylvania.
What is the ZIP code of Williamson, PA?
The ZIP code for Williamson is 17252.
What is the nearest town to Williamson?
St. Thomas, 5.0 miles away.
Are there webcams near Williamson?
Yes. The closest is Guilford Township, 5.3 miles away.
What is the hottest month in Williamson?
July, with an average high of 85°F (29°C).
What is the coldest month in Williamson?
January, with an average low of 23°F (-5°C).
How much does it rain in Williamson?
About 43.5 inches (1,106 mm) a year; the wettest month is September.
Does it snow in Williamson?
Yes, about 31 inches of snow fall in an average year.
When is the best time to visit Williamson?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Williamson have?
Hot-summer humid continental (Köppen Dfa).
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