Jefferson County, IN Weather Forecast
County weather hub
Cloudy then Slight Chance Showers And Thunderstorms
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Cloudy, with a high near 77. Southeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Jefferson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Jefferson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 11:56 AM EDT
- Forecast office
- LMK
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Today looks like the warmest upcoming period in Jefferson County at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 10 to 15 mph W.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 11:56 AM EDT
- Coverage
- 7 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- LMK
- Radar station
- KLVX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy. Low around 56, with temperatures rising to around 68 overnight. Southwest wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 3pm. Cloudy, with a high near 60. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers between 7pm and 8pm. Mostly cloudy, with a low around 40. Northwest wind around 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 55. North wind 6 to 10 mph.
Clear, with a low around 34.
Sunny, with a high near 62.
Clear, with a low around 39.
Sunny, with a high near 67.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 68.
Mostly clear, with a low around 43.
Sunny, with a high near 70.
Mostly clear, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Cloudy then Slight Chance Showers And Thunderstorms
|
77°F |
7 mph
SE
|
|
Tonight
Oct 15
|
Chance Showers And Thunderstorms
|
56°F |
6 to 9 mph
SW
|
|
Friday
Oct 16
|
Chance Rain Showers
|
60°F |
10 to 15 mph
W
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Mostly Cloudy
|
40°F |
12 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
55°F |
6 to 10 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
34°F |
5 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
62°F |
5 mph
SE
|
|
Sunday Night
Oct 18
|
Clear
|
39°F |
3 mph
SE
|
|
Monday
Oct 19
|
Sunny
|
67°F |
3 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
1 mph
E
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
68°F |
2 mph
E
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
2 mph
NE
|
|
Wednesday
Oct 21
|
Sunny
|
70°F |
2 mph
E
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
45°F |
2 mph
E
|
Major City Forecasts
Live forecast snapshots for major cities across Jefferson County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Jefferson County.
Largest mapped city population in this region: 11,750.
