Williamstown, IA
Unincorporated community in Johnson County, Iowa
Williamstown is a small unincorporated community in Johnson County, Iowa. It is 0.1 miles N of Frytown, the nearest town. Its ZIP code is 52247.
Williamstown at a glance
- State
- Iowa
- County
- Johnson County
- ZIP code
- 52247
- Nearest town
- Frytown (0.1 mi)
- Time zone
- America/Chicago
- Coordinates
- 41.5700, -91.7322
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 · 86°F average high
- Januarycoldest month · 15°F average low
- 35.7 inprecipitation per year · 906 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Williamstown: May and July to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station IOWA CITY MUNI AP, IA US (USW00014937), adjusted for the elevation of Williamstown.
Williamstown weather month by month
Sunrise and sunset in Williamstown through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:29 AM | 5:03 PM | 9 h 34 min |
| February | 7:00 AM | 5:41 PM | 10 h 41 min |
| March | 7:16 AM | 7:14 PM | 11 h 58 min |
| April | 6:24 AM | 7:48 PM | 13 h 23 min |
| May | 5:45 AM | 8:20 PM | 14 h 35 min |
| June | 5:30 AM | 8:44 PM | 15 h 13 min |
| July | 5:44 AM | 8:41 PM | 14 h 56 min |
| August | 6:14 AM | 8:08 PM | 13 h 53 min |
| September | 6:46 AM | 7:17 PM | 12 h 31 min |
| October | 7:17 AM | 6:27 PM | 11 h 9 min |
| November | 6:54 AM | 4:48 PM | 9 h 53 min |
| December | 7:25 AM | 4:39 PM | 9 h 14 min |
Times for the 15th of each month, local time (America/Chicago).
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 86°F (30°C), and the coldest is January, with average lows of 15°F (-10°C).
It gets about 35.7 inches (906 mm) of precipitation a year. The wettest month is June and the driest is January.
The best time to visit Williamstown is May and July to 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 Oxford: IC - I-80 @ MM 232.7 (Eagle Ave NW), 8.5 miles N of Williamstown.
Webcams: Windy.com. Distances in a straight line from Williamstown.
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Map of Williamstown, IA
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Williamstown Street View
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Other communities near Williamstown
Questions about Williamstown
Where is Williamstown, IA?
Williamstown is an unincorporated community in Johnson County, Iowa, 0.1 miles N of Frytown.
What county is Williamstown in?
Williamstown is in Johnson County, Iowa.
What is the ZIP code of Williamstown, IA?
The ZIP code for Williamstown is 52247.
What is the nearest town to Williamstown?
Frytown, 0.1 miles away.
Are there webcams near Williamstown?
Yes. The closest is Oxford: IC - I-80 @ MM 232.7 (Eagle Ave NW), 8.5 miles away.
What is the hottest month in Williamstown?
July, with an average high of 86°F (30°C).
What is the coldest month in Williamstown?
January, with an average low of 15°F (-10°C).
How much does it rain in Williamstown?
About 35.7 inches (906 mm) a year; the wettest month is June.
Does it snow in Williamstown?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Williamstown?
May and July to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Williamstown have?
Hot-summer humid continental (Köppen Dfa).
Last updated: