Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Newsletters
  • Advertising
  • Superior Accuracy™
Dangerous heat wave to impact 170 million people in Midwest and Northeast. Details here Chevron right

Jefferson, IA

70°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Jefferson

Iowa

70°
No results found.
Try searching for a city, zip code or point of interest.
settings
Jefferson, IA Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Newsletters

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities
Extreme Heat Warning

June 20 - August 3

Fri 6/20

97° /75°
55%
A thunderstorm this morning; otherwise, mostly sunny, windy and humid
alerts

Extreme Heat Warning

12:00 PM Friday - 9:00 PM Sunday

RealFeel®102°

RealFeel Shade™98°

Max UV Index11 (Extreme)

WindSSW 20 mph

Sat 6/21

99° /74°
4%
Sunny, windy and hot; danger of dehydration and heatstroke if outside for extended periods of time
alerts

Extreme Heat Warning

12:00 PM Friday - 9:00 PM Sunday

RealFeel®102°

RealFeel Shade™99°

Max UV Index11 (Extreme)

WindSSW 21 mph

Sun 6/22

96° /73°
11%
Windy and hot with sunshine; possible danger of dehydration and heatstroke while doing strenuous activities
alerts

Extreme Heat Warning

12:00 PM Friday - 9:00 PM Sunday

RealFeel®98°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindS 21 mph

Mon 6/23

85° /66°
61%
Turning out cloudy and not as hot; breezy in the morning, turning humid in the afternoon with a thunderstorm

RealFeel®93°

RealFeel Shade™86°

Max UV Index7 (High)

WindW 12 mph

Tue 6/24

81° /69°
88%
Mainly cloudy and humid with a couple of showers and a thunderstorm

RealFeel®87°

RealFeel Shade™85°

Max UV Index3 (Moderate)

WindSW 6 mph

Wed 6/25

85° /69°
88%
More clouds than sun; humid with a couple of showers and a thunderstorm

RealFeel®93°

RealFeel Shade™89°

Max UV Index5 (Moderate)

WindSSW 12 mph

Thu 6/26

85° /67°
71%
Times of clouds and sun with a couple of thunderstorms, especially late; humid

RealFeel®91°

RealFeel Shade™87°

Max UV Index6 (High)

WindSW 12 mph

Fri 6/27

83° /65°
3%
Humid with times of clouds and sun

RealFeel®91°

RealFeel Shade™86°

Max UV Index6 (High)

WindWNW 8 mph

Sat 6/28

82° /66°
3%
Humid; mostly cloudy in the morning followed by sun through high clouds

RealFeel®91°

RealFeel Shade™89°

Max UV Index7 (High)

WindE 2 mph

Sun 6/29

84° /66°
57%
Cloudy and humid with a couple of thunderstorms

RealFeel®91°

RealFeel Shade™91°

Max UV Index4 (Moderate)

WindS 5 mph

Mon 6/30

83° /64°
0%
Less humid with clouds and sun

RealFeel®87°

RealFeel Shade™80°

Max UV Index9 (Very High)

WindNNW 9 mph

Tue 7/1

84° /64°
1%
Partial sunshine

RealFeel®87°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindNNW 7 mph

Wed 7/2

83° /65°
58%
Some sunshine giving way to clouds; a morning shower in spots followed by a little rain in the afternoon

RealFeel®89°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindENE 1 mph

Thu 7/3

84° /62°
25%
Mostly cloudy

RealFeel®86°

RealFeel Shade™83°

Max UV Index3 (Moderate)

WindWSW 4 mph

Fri 7/4

84° /66°
25%
Humid with plenty of sun

RealFeel®94°

RealFeel Shade™90°

Max UV Index10 (Very High)

WindS 2 mph

Sat 7/5

83° /67°
20%
Mostly sunny and humid

RealFeel®93°

RealFeel Shade™89°

Max UV Index10 (Very High)

WindS 5 mph

Sun 7/6

86° /67°
61%
Humid with times of clouds and sun; a couple of showers and a thunderstorm in the afternoon

RealFeel®93°

RealFeel Shade™90°

Max UV Index10 (Very High)

WindSSW 6 mph

Mon 7/7

86° /66°
25%
Cloudy and humid

RealFeel®93°

RealFeel Shade™92°

Max UV Index3 (Moderate)

WindSSW 5 mph

Tue 7/8

85° /64°
20%
Less humid with plenty of sunshine

RealFeel®88°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindNW 9 mph

Wed 7/9

78° /60°
20%
Increasing cloudiness

RealFeel®82°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindNW 8 mph

Thu 7/10

78° /59°
25%
Clouds and sun

RealFeel®79°

RealFeel Shade™76°

Max UV Index5 (Moderate)

WindS 5 mph

Fri 7/11

79° /61°
25%
Turning cloudy

RealFeel®83°

RealFeel Shade™79°

Max UV Index10 (Very High)

WindESE 7 mph

Sat 7/12

79° /60°
70%
Periods of rain in the morning; otherwise, clouds giving way to some sun

RealFeel®81°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindNW 10 mph

Sun 7/13

78° /59°
20%
Less humid with more sunshine than clouds

RealFeel®83°

RealFeel Shade™76°

Max UV Index9 (Very High)

WindESE 4 mph

Mon 7/14

78° /62°
25%
A thick cloud cover

RealFeel®77°

RealFeel Shade™77°

Max UV Index3 (Moderate)

WindSE 10 mph

Tue 7/15

79° /67°
65%
A couple of showers in the morning; otherwise, rather cloudy and humid

RealFeel®86°

RealFeel Shade™84°

Max UV Index3 (Moderate)

WindWSW 6 mph

Wed 7/16

81° /64°
25%
Times of clouds and sun

RealFeel®84°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindWSW 5 mph

Thu 7/17

84° /67°
10%
Sunny to partly cloudy and humid

RealFeel®93°

RealFeel Shade™91°

Max UV Index10 (Very High)

WindS 7 mph

Fri 7/18

87° /68°
25%
Humid with times of clouds and sun

RealFeel®96°

RealFeel Shade™93°

Max UV Index4 (Moderate)

WindWNW 5 mph

Sat 7/19

85° /67°
72%
Cloudy and humid; a couple of morning showers and a thunderstorm, then afternoon rain

RealFeel®90°

RealFeel Shade™90°

Max UV Index2 (Low)

WindN 8 mph

Sun 7/20

83° /62°
20%
Mostly sunny and less humid

RealFeel®90°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindENE 4 mph

Mon 7/21

80° /66°
20%
Mostly sunny

RealFeel®87°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindSE 8 mph

Tue 7/22

86° /68°
10%
Mostly sunny and humid

RealFeel®96°

RealFeel Shade™94°

Max UV Index10 (Very High)

WindSE 12 mph

Wed 7/23

87° /68°
20%
Clouds to start, then sunshine returns and humid

RealFeel®95°

RealFeel Shade™93°

Max UV Index10 (Very High)

WindWNW 9 mph

Thu 7/24

84° /67°
20%
Partly sunny

RealFeel®89°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindNNE 7 mph

Fri 7/25

80° /65°
20%
Mostly sunny

RealFeel®86°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindE 6 mph

Sat 7/26

80° /67°
25%
Humid with clouds to start, then sunshine returns

RealFeel®88°

RealFeel Shade™85°

Max UV Index9 (Very High)

WindSE 8 mph

Sun 7/27

86° /67°
20%
Humid with plenty of sunshine

RealFeel®94°

RealFeel Shade™92°

Max UV Index9 (Very High)

WindESE 7 mph

Mon 7/28

87° /68°
5%
Humid with plenty of sunshine

RealFeel®94°

RealFeel Shade™92°

Max UV Index9 (Very High)

WindSSE 10 mph

Tue 7/29

88° /68°
20%
Brilliant sunshine and humid

RealFeel®95°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindSSE 8 mph

Wed 7/30

87° /68°
5%
Humid with plenty of sunshine

RealFeel®93°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindSSW 8 mph

Thu 7/31

87° /69°
20%
Humid with sunshine and a few clouds

RealFeel®92°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindSW 8 mph

Fri 8/1

79° /62°
2%
Mostly sunny

RealFeel®81°

RealFeel Shade™78°

Max UV Index9 (Very High)

WindESE 8 mph

Sat 8/2

78° /61°
25%
Some sun

RealFeel®81°

RealFeel Shade™79°

Max UV Index8 (Very High)

WindSSE 10 mph

Sun 8/3

84° /58°
55%
Humid with intervals of clouds and sunshine; a thunderstorm in the afternoon

RealFeel®94°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindS 7 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Heat wave to push temps near 100 F across central, eastern US

1 hour ago

Weather News

What is a heat dome and how can it create 'ring of fire' storms?

1 day ago

Hurricane

Erick to continue as tropical rainstorm following major hurricane

10 hours ago

Health

‘Nimbus’ COVID-19 variant arrives in U.S. after China surge

23 minutes ago

Weather Forecasts

Major cooldown eyes West as fire weather increases for Great Basin

1 hour ago

 More Stories

Featured Stories

Severe Weather

Rare high-elevation tornado confirmed at Pikes Peak

1 day ago

Astronomy

Summer solstice: Everything to know about the year's longest day

19 hours ago

Astronomy

Meteorological summer vs. astronomical summer explained

3 days ago

Weather News

5 times the American flag survived extreme weather

3 days ago

Weather News

First methane-powered sea spiders found crawling on the ocean floor

1 day ago
World North America United States Iowa Jefferson

Weather Near Jefferson:

  • Ames, IA
  • Des Moines, IA
  • West Des Moines, IA
Company
Proven Superior Accuracy About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2025 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information

...

...

...