Williamstown, IN
Unincorporated community in Decatur County, Indiana
Williamstown is a small unincorporated community in Decatur County, Indiana. It is 2.3 miles S of Sandusky, the nearest town. Its ZIP code is 46156.
Williamstown at a glance
- State
- Indiana
- County
- Decatur County
- ZIP code
- 46156
- Nearest town
- Sandusky (2.3 mi)
- Time zone
- America/Indiana/Indianapolis
- Coordinates
- 39.4528, -85.4692
Weather in Williamstown now
Loading the National Weather Service forecast…
Williamstown weather by the hour
Williamstown weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Williamstown.
This week in Williamstown
Sunrise, sunset and moon in Williamstown
What is the weather usually like in Williamstown?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 22°F average low
- 47.0 inprecipitation per year · 1,194 mm
- 13.3 insnowfall per year · 34 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Williamstown: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station GREENSBURG, IN US (USC00123547), adjusted for the elevation of Williamstown.
Williamstown weather month by month
Sunrise and sunset in Williamstown through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:58 AM | 5:44 PM | 9 h 45 min |
| February | 7:32 AM | 6:19 PM | 10 h 47 min |
| March | 7:51 AM | 7:50 PM | 11 h 58 min |
| April | 7:02 AM | 8:20 PM | 13 h 18 min |
| May | 6:26 AM | 8:50 PM | 14 h 24 min |
| June | 6:12 AM | 9:12 PM | 14 h 59 min |
| July | 6:26 AM | 9:09 PM | 14 h 43 min |
| August | 6:53 AM | 8:39 PM | 13 h 45 min |
| September | 7:22 AM | 7:51 PM | 12 h 29 min |
| October | 7:50 AM | 7:04 PM | 11 h 13 min |
| November | 7:24 AM | 5:28 PM | 10 h 3 min |
| December | 7:53 AM | 5:20 PM | 9 h 27 min |
Times for the 15th of each month, local time (America/Indiana/Indianapolis).
What is the weather like in Williamstown?
Williamstown 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 22°F (-6°C).
It gets about 47.0 inches (1,194 mm) of precipitation a year. The wettest month is June and the driest is February. Snow is common: about 13 inches fall in an average year.
The best time to visit Williamstown 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 Williamstown
The closest live webcam is Greensburg: I-74: 1-074-134-4-1 @ 134.4, 6.3 miles S of Williamstown.
Webcams: Windy.com. Distances in a straight line from Williamstown.
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Map of Williamstown, IN
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Williamstown Street View
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Questions about Williamstown
Where is Williamstown, IN?
Williamstown is an unincorporated community in Decatur County, Indiana, 2.3 miles S of Sandusky.
What county is Williamstown in?
Williamstown is in Decatur County, Indiana.
What is the ZIP code of Williamstown, IN?
The ZIP code for Williamstown is 46156.
What is the nearest town to Williamstown?
Sandusky, 2.3 miles away.
Are there webcams near Williamstown?
Yes. The closest is Greensburg: I-74: 1-074-134-4-1 @ 134.4, 6.3 miles away.
What is the hottest month in Williamstown?
July, with an average high of 85°F (29°C).
What is the coldest month in Williamstown?
January, with an average low of 22°F (-6°C).
How much does it rain in Williamstown?
About 47.0 inches (1,194 mm) a year; the wettest month is June.
Does it snow in Williamstown?
Yes, about 13 inches of snow fall in an average year.
When is the best time to visit Williamstown?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Williamstown have?
Hot-summer humid continental (Köppen Dfa).
Last updated: