Eureka, MO
Unincorporated community in Perry County, Missouri
Eureka is a small unincorporated community in Perry County, Missouri. It is 2.1 miles W of Longtown, the nearest town. Its ZIP code is 63746.
Eureka at a glance
- State
- Missouri
- County
- Perry County
- ZIP code
- 63746
- Nearest town
- Longtown (2.1 mi)
- Time zone
- America/Chicago
- Coordinates
- 37.6789, -89.7369
Weather in Eureka now
Loading the National Weather Service forecast…
Eureka weather by the hour
Eureka weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Eureka.
This week in Eureka
Sunrise, sunset and moon in Eureka
What is the weather usually like in Eureka?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Januarycoldest month · 21°F average low
- 46.2 inprecipitation per year · 1,174 mm
- 4.7 insnowfall per year · 12 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Eureka: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station PERRYVILLE WTP, MO US (USC00236641), adjusted for the elevation of Eureka.
Eureka weather month by month
Sunrise and sunset in Eureka through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:11 AM | 5:05 PM | 9 h 54 min |
| February | 6:46 AM | 5:39 PM | 10 h 52 min |
| March | 7:08 AM | 7:07 PM | 11 h 59 min |
| April | 6:22 AM | 7:35 PM | 13 h 13 min |
| May | 5:47 AM | 8:03 PM | 14 h 15 min |
| June | 5:35 AM | 8:23 PM | 14 h 48 min |
| July | 5:48 AM | 8:21 PM | 14 h 33 min |
| August | 6:13 AM | 7:53 PM | 13 h 39 min |
| September | 6:39 AM | 7:08 PM | 12 h 28 min |
| October | 7:06 AM | 6:23 PM | 11 h 16 min |
| November | 6:37 AM | 4:49 PM | 10 h 11 min |
| December | 7:05 AM | 4:42 PM | 9 h 37 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Eureka?
Eureka has a hot-summer humid continental climate. The warmest month is July, with an average high of 88°F (31°C), and the coldest is January, with average lows of 21°F (-6°C).
It gets about 46.2 inches (1,174 mm) of precipitation a year. The wettest month is May and the driest is January. Snow is common: about 5 inches fall in an average year.
The best time to visit Eureka is May–June and September–October. 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 Eureka
The closest live webcam is Perryville, 7.5 miles W of Eureka.
Webcams: Windy.com. Distances in a straight line from Eureka.
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Map of Eureka, MO
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Eureka Street View
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Questions about Eureka
Where is Eureka, MO?
Eureka is an unincorporated community in Perry County, Missouri, 2.1 miles W of Longtown.
What county is Eureka in?
Eureka is in Perry County, Missouri.
What is the ZIP code of Eureka, MO?
The ZIP code for Eureka is 63746.
What is the nearest town to Eureka?
Longtown, 2.1 miles away.
Are there webcams near Eureka?
Yes. The closest is Perryville, 7.5 miles away.
What is the hottest month in Eureka?
July, with an average high of 88°F (31°C).
What is the coldest month in Eureka?
January, with an average low of 21°F (-6°C).
How much does it rain in Eureka?
About 46.2 inches (1,174 mm) a year; the wettest month is May.
Does it snow in Eureka?
Yes, about 5 inches of snow fall in an average year.
When is the best time to visit Eureka?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Eureka have?
Hot-summer humid continental (Köppen Dfa).
Last updated: