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Heat dome collapse to spark thunderstorms. Get the forecast. Chevron right

Jefferson, IA

86°F
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Jefferson

Iowa

86°
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Jefferson, IA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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3 PM

88°
RealFeel® 100°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 34%
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Mostly sunny
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™93°

Heat Index96°

WindS 10 mph

Air QualityFair

Max UV Index7.3 (High)

Wind Gusts16 mph

Humidity63%

Indoor Humidity63% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

90°
RealFeel® 99°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 37%
Chevron down
Mostly sunny
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™94°

Heat Index99°

WindS 12 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts15 mph

Humidity60%

Indoor Humidity60% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

88°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™93°

Heat Index97°

WindS 10 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts17 mph

Humidity63%

Indoor Humidity63% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

86°
RealFeel® 93°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 51%
Chevron down
Partly sunny w/ t-storms
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™90°

Heat Index97°

WindS 10 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts18 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Rain0.15 in

Visibility4 mi

Cloud Ceiling30000 ft

7 PM

83°
RealFeel® 90°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™88°

Heat Index90°

WindSSE 9 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts21 mph

Humidity73%

Indoor Humidity73% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

86°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 20%
Chevron down
Mostly cloudy
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

RealFeel Shade™91°

Heat Index94°

WindS 14 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts27 mph

Humidity69%

Indoor Humidity69% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling7000 ft

9 PM

83°
RealFeel® 87°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 20%
Chevron down
Mostly cloudy
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

Heat Index90°

WindS 14 mph

Air QualityFair

Wind Gusts27 mph

Humidity75%

Indoor Humidity75% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

80°
RealFeel® 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 20%
Chevron down
Mostly cloudy
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

Heat Index84°

WindSSE 14 mph

Air QualityFair

Wind Gusts23 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

78°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Mostly cloudy
alerts

Flood Watch

11:42 PM Thursday - 7:00 AM Saturday

WindSSE 14 mph

Air QualityFair

Wind Gusts23 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Jefferson

AccuWeather's hourly forecast for Jefferson provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 88° with a RealFeel® of 100°, mostly sunny with a 34% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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