Byrnesville, MO
Unincorporated community in Jefferson County, Missouri
Byrnesville is a small unincorporated community in Jefferson County, Missouri. It is 2.4 miles S of Cedar Hill, the nearest town. Its ZIP code is 63016.
Byrnesville at a glance
- State
- Missouri
- County
- Jefferson County
- ZIP code
- 63016
- Nearest town
- Cedar Hill (2.4 mi)
- Time zone
- America/Chicago
- Coordinates
- 38.3928, -90.6397
Weather in Byrnesville now
Loading the National Weather Service forecast…
Byrnesville weather by the hour
Byrnesville weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Byrnesville.
This week in Byrnesville
Sunrise, sunset and moon in Byrnesville
What is the weather usually like in Byrnesville?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Januarycoldest month · 22°F average low
- 43.6 inprecipitation per year · 1,107 mm
- 9.2 insnowfall per year · 23 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Byrnesville: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station FESTUS, MO US (USC00232850), adjusted for the elevation of Byrnesville.
Byrnesville weather month by month
Sunrise and sunset in Byrnesville through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:16 AM | 5:07 PM | 9 h 50 min |
| February | 6:51 AM | 5:42 PM | 10 h 50 min |
| March | 7:11 AM | 7:10 PM | 11 h 59 min |
| April | 6:24 AM | 7:40 PM | 13 h 15 min |
| May | 5:49 AM | 8:08 PM | 14 h 19 min |
| June | 5:36 AM | 8:29 PM | 14 h 52 min |
| July | 5:49 AM | 8:27 PM | 14 h 37 min |
| August | 6:15 AM | 7:58 PM | 13 h 42 min |
| September | 6:43 AM | 7:12 PM | 12 h 29 min |
| October | 7:10 AM | 6:26 PM | 11 h 15 min |
| November | 6:42 AM | 4:51 PM | 10 h 8 min |
| December | 7:11 AM | 4:44 PM | 9 h 33 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Byrnesville?
Byrnesville 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 22°F (-5°C).
It gets about 43.6 inches (1,107 mm) of precipitation a year. The wettest month is April and the driest is February. Snow is common: about 9 inches fall in an average year.
The best time to visit Byrnesville 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 Byrnesville
The closest live webcam is Oakville › South, 16.4 miles E of Byrnesville.
Webcams: Windy.com. Distances in a straight line from Byrnesville.
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Map of Byrnesville, MO
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Byrnesville Street View
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Questions about Byrnesville
Where is Byrnesville, MO?
Byrnesville is an unincorporated community in Jefferson County, Missouri, 2.4 miles S of Cedar Hill.
What county is Byrnesville in?
Byrnesville is in Jefferson County, Missouri.
What is the ZIP code of Byrnesville, MO?
The ZIP code for Byrnesville is 63016.
What is the nearest town to Byrnesville?
Cedar Hill, 2.4 miles away.
Are there webcams near Byrnesville?
Yes. The closest is Oakville › South, 16.4 miles away.
What is the hottest month in Byrnesville?
July, with an average high of 88°F (31°C).
What is the coldest month in Byrnesville?
January, with an average low of 22°F (-5°C).
How much does it rain in Byrnesville?
About 43.6 inches (1,107 mm) a year; the wettest month is April.
Does it snow in Byrnesville?
Yes, about 9 inches of snow fall in an average year.
When is the best time to visit Byrnesville?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Byrnesville have?
Hot-summer humid continental (Köppen Dfa).
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