Grainger County, TN Weather Forecast
County weather hub
Chance Rain Showers
Compare major city weather across Grainger County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers. Cloudy. Low around 64, with temperatures rising to around 67 overnight. Wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Grainger County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Grainger County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 26 to Jun 1, 2026
- Latest sync
- May 26, 2026 7:59 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grainger County
Tuesday looks like the warmest upcoming period in Grainger County at 83 degrees F.
Sunday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph W.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- May 26, 2026 7:59 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- MRX
- Radar station
- KMRX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers likely before 11am, then a chance of showers and thunderstorms between 11am and noon, then showers and thunderstorms likely between noon and 2pm, then showers and thunderstorms likely. Mostly cloudy. High near 83, with temperatures falling to around 80 in the afternoon. East wind around 0 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. West wind around 0 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 11am, then showers and thunderstorms likely. Partly sunny, with a high near 82. West wind 0 to 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Southwest wind around 0 mph. Chance of precipitation is 70%.
Rain showers likely before 11am, then showers and thunderstorms likely. Partly sunny, with a high near 83. Northwest wind around 0 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 60. Northeast wind around 0 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
A chance of rain showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
A chance of rain showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
A chance of rain showers. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
A slight chance of rain showers. Mostly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 26
|
Chance Rain Showers
|
64°F |
0 mph
|
|
Tuesday
May 26
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
83°F |
0 mph
|
|
Tuesday Night
May 26
|
Showers And Thunderstorms Likely
|
65°F |
0 mph
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
82°F |
0 to 5 mph
W
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms Likely
|
64°F |
0 mph
|
|
Thursday
May 28
|
Showers And Thunderstorms Likely
|
83°F |
0 mph
|
|
Thursday Night
May 28
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
60°F |
0 mph
|
|
Friday
May 29
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
82°F |
0 mph
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
60°F |
0 mph
|
|
Saturday
May 30
|
Chance Showers And Thunderstorms
|
78°F |
0 mph
|
|
Saturday Night
May 30
|
Chance Showers And Thunderstorms
|
58°F |
0 mph
|
|
Sunday
May 31
|
Chance Rain Showers
|
78°F |
0 mph
|
|
Sunday Night
May 31
|
Chance Rain Showers
|
56°F |
0 mph
|
|
Monday
Jun 1
|
Slight Chance Rain Showers
|
79°F |
0 mph
|
Major City Forecasts
Live forecast snapshots for major cities across Grainger County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Grainger County.
Largest mapped city population in this region: 1,869.
