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Current Weather in Grainger County, TN

Updated: Sun Sep 13th 2026 12:00 PM EDT

Scattered Showers

78^°F 26^°C

Feels Like 81^°F / 27^°C

Grainger County, TN weather condition is Scattered Showers and 78°F.

Today's Weather in Grainger County,TN

The current weather in Grainger County TN as of 12:00 PM EDT on Sun Sep 13th 2026, has a sky condition of Scattered Showers with the visibility of 6 mile(s) and the UV index at 6.5. It is 78 degrees fahrenheit but feels like 81 degrees with a forecasted high of 85 and low of 68. The barometric pressure is 30.05 - measured by inches of mercury - and is steady since its last observation. The humidity is 66 percent that's falling since the last report, with a dew point of 66 degrees fahrenheit which is falling. Wind direction is from the West-Northwest at 3.8 miles per hour, gusting at 5.9 miles per hour. Sunrise was at 7:15 AM and Sunset is at 7:44 PM. The moon phase is a Waxing Crescent moon rising at 9:54 AM with 8% illumination. Thank you for listening to the weather report from LocalConditions.com!

Listen to this weather report - press Read

Barometer 30.05 inHg. falling
Humidity 66% falling
Heat Index 81°F
Wind from WNW. 3.8 mph
Wind Gust 5.9 miles per hour
Wind Chill 78°F
UV Index 6.5

Dew Point 66°F falling
Visibility 6 mi.
Sunrise 7:15 AM
Sunset 7:44 PM
Moonrise 9:54 AM
Moonset 8:53 PM
Moon Phase Waxing Crescent Moon 8%

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Radar Alerts Next 48 Hours Traffic

Hourly Forecast - Next 8 hours

5 Day Forecast

Fog

Fog with a high of 85°F and a low of 68°F. Probable rainfall forecasted, having a 54% chance with an estimated 0.04in. Winds will be light at 5mph at times. The humidity will be on the higher side, reaching around 76%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 85° \| Lo 68°	76%	54% \| est. 0.04in	0%	4.9 mph

Sunny

Sunny with a high of 83°F and a low of 68°F. 17% possible chance of rain predicted with an estimated 0in. Winds will be light at 7mph at times. The humidity will be on the higher side, reaching around 72%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 83° \| Lo 68°	72%	17% \| est. 0in	0%	6.9 mph

Sunny

Sunny with a high of 87°F and a low of 66°F. 7% possible chance of rain predicted. Winds will be light at 8mph at times. The humidity will be on the higher side, reaching around 64%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 87° \| Lo 66°	64%	7%	0%	7.4 mph

Sunny

Sunny with a high of 88°F and a low of 71°F. 7% possible chance of rain predicted. Winds will be light at 6mph at times. The humidity will be on the higher side, reaching around 68%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 88° \| Lo 71°	68%	7%	0%	5.1 mph

Sunny

Sunny with a high of 89°F and a low of 71°F. Probable rainfall forecasted, having a 57% chance with an estimated 0.06in. Winds will be light at 6mph at times. The humidity will be on the higher side, reaching around 72%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 89° \| Lo 71°	72%	57% \| est. 0.06in	0%	5.4 mph

Yesterday 5-Day 10-Day

Weather Radar Map

Live Grainger County, TN weather with granular precipitation, radar, barometric pressure, temperatures and wind speeds for today thru Thursday, as you toggle through each map layer. Use the slider to move forward and back in time to view how current data and forecasts will affect the region; you can press or click on the map to show metrics available for each tab. The related timestamp is located above the Play button which will animate the weather forecast.

Hourly Temperature

The current temperature today is 78^°F. The morning temperature of 68°^F is lowest at 6am with the daytime high of 85°^F at 3pm and a low around 75°^F at 11am is expected.

Hourly Barometric Pressure

The highest pressure today is 30.06^inHg at 9am and lowest being 29.96^inHg at 5pm.

Hourly Wind Speeds

The fastest wind is reported to be 4.9^mph at 5pm, while the slowest is 0.4^mph around 9pm; expect wind gusts peaking 8.5^mph at 4am.

More Weather Charts

Current National Weather

Rain and Thunder in Central and Eastern U.S., Cool in Northwest 09-12 to 09-14

Updated Sat Sep 12th 2026, 5:56am PDT

Get ready for a mix of rain and thunderstorms if you are in the Central to Eastern parts of U.S. this weekend as a strong cold front moves through. Meanwhile, the Northwest and Northern Rockies will experience cooler, wet conditions. Let's dive into the details and see what to expect in your area over the coming days.

Central and Eastern U.S.

Today and tomorrow, a defined cold front traveling from a big storm over Hudson Bay is making its way across the Central and Eastern U.S.. This means we can expect showers and thunderstorms from the Northeast to the Plains states. The most intense rain is set to drench areas in the Ohio Valley, Mid-Atlantic, and Northeast today and into tomorrow, as warm moist air moves in. With slow-moving storms, already wet ground, and urban areas in the path, there's a flash flood risk from Richmond, VA up through New York, NY.

Northwest and Northern Rockies

Tonight, a strong weather system coming in from the Pacific will bring much-needed rain to the Northwest. This will be followed by another front moving in tomorrow. The rain here is due to a low-pressure system and is expected to bring cooler weather to the Northern Rockies. Expect temperatures in the 60s and 70s, which should be a refreshing change!

Southern Rockies and Plains

Thunderstorms will persist daily across the Southern Rockies and Four Corners area. By tomorrow, a northward-moving front will interact with a strong low-level wind to trigger more showers and storms in the Plains, with potential flash flooding. While some areas cool down, the Southern Plains and Mid-Mississippi Valley will endure sweltering heat, as the front won't reach beyond the Oklahoma Panhandle.