Live Weather & Forecast

Weather in Jefferson

Iowa, United States · Real-time conditions & 3-day outlook

Flag of United States
Clear
14°C
Feels like 13°C
57°F / Feels 56°F
Clear
Jefferson, Iowa
🌙 Nighttime
Updated: 2026-04-15 22:15
💧
Humidity
100%
💨
Wind
14.4 km/h W
🌬️
Wind Gust
28 km/h
🌡️
Pressure
1004 mb
👁️
Visibility
14 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
25%
💦
Dew Point
13.7°C
🌐
Wind Degree
270°

Air Quality Index

US EPA: Good UK DEFRA: Low (2)
CO
145.9 μg/m³
NO₂
4.4 μg/m³
O₃
69 μg/m³
SO₂
1.2 μg/m³
PM 2.5
12.7 μg/m³
PM 10
16 μg/m³

Weather Alerts 2

Met · Severe · Future
Severe Thunderstorm Watch issued April 15 at 12:28PM CDT until April 15 at 7:00PM CDT by NWS Des Moines IA

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 119 IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 25 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER...

Effective: 2026-04-15T12:28:00-05:00  ·  Expires: 2026-04-15T19:00:00-05:00
Met · Severe · Immediate
Severe Thunderstorm Warning issued April 15 at 7:23PM CDT until April 15 at 7:45PM CDT by NWS Des Moines IA

At 723 PM CDT, a severe thunderstorm was located over Yale, or 11 miles northeast of Guthrie Center, moving east at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Lake Panorama, Bagley, Yale, Jamaica, Springbrook State Park, and Lakin Slough Game Management Area.

For your protection move to an interior room on the lowest floor of a building.

Effective: 2026-04-15T19:23:00-05:00  ·  Expires: 2026-04-15T19:45:00-05:00

Today's Hourly Forecast

24-hour breakdown for Jefferson, Iowa

12 AM
Clear
15°
Clear
💧 77% 💨 17.3 km/h
1 AM
Clear
15°
Clear
💧 81% 💨 12.2 km/h
2 AM
Patchy rain nearby
14°
Patchy rain nearby
💧 78% 💨 14 km/h 🌧️ 69%
3 AM
Patchy rain nearby
13°
Patchy rain nearby
💧 83% 💨 10.4 km/h 🌧️ 100%
4 AM
Patchy rain nearby
13°
Patchy rain nearby
💧 85% 💨 11.5 km/h 🌧️ 100%
5 AM
Patchy rain nearby
12°
Patchy rain nearby
💧 87% 💨 14.8 km/h 🌧️ 64%
6 AM
Clear
12°
Clear
💧 89% 💨 8.3 km/h
7 AM
Mist
12°
Mist
💧 95% 💨 10.1 km/h 🌧️ 82%
8 AM
Patchy rain nearby
12°
Patchy rain nearby
💧 95% 💨 10.1 km/h 🌧️ 100%
9 AM
Mist
13°
Mist
💧 95% 💨 9.7 km/h 🌧️ 62%
10 AM
Mist
14°
Mist
💧 96% 💨 6.5 km/h 🌧️ 100%
11 AM
Mist
15°
Mist
💧 95% 💨 9 km/h
12 PM
Overcast
16°
Overcast
💧 92% 💨 6.8 km/h
1 PM
Mist
17°
Mist
💧 97% 💨 9.7 km/h 🌧️ 100%
2 PM
Light drizzle
16°
Light drizzle
💧 94% 💨 11.9 km/h 🌧️ 100%
3 PM
Moderate rain
16°
Moderate rain
💧 95% 💨 8.3 km/h 🌧️ 100%
4 PM
Light drizzle
17°
Light drizzle
💧 92% 💨 10.1 km/h 🌧️ 100%
5 PM
Patchy rain nearby
18°
Patchy rain nearby
💧 91% 💨 9.7 km/h 🌧️ 100%
6 PM
Cloudy
19°
Cloudy
💧 89% 💨 12.2 km/h
7 PM
Sunny
19°
Sunny
💧 87% 💨 17.3 km/h
8 PM
Moderate rain
17°
Moderate rain
💧 95% 💨 14.4 km/h 🌧️ 100%
9 PM
Moderate rain
16°
Moderate rain
💧 89% 💨 12.2 km/h 🌧️ 100%
10 PM
Clear
14°
Clear
💧 100% 💨 14.4 km/h
11 PM
Clear
14°
Clear
💧 88% 💨 15.5 km/h

3-Day Forecast

Daily overview for Jefferson, Iowa

Today
Moderate rain
Moderate rain
18° / 11°
🌧️ 85% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 17.3 km/h
🌧️ Total precip: 17.51 mm
☀️ UV Index: 1.1
🌅 Sunrise: 06:37 AM
🌇 Sunset: 07:59 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
Patchy rain nearby
29° / 9°
🌧️ 60% chance of rain
💧 Avg. humidity: 67%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0.15 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:35 AM
🌇 Sunset: 08:00 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Overcast
Overcast
19° / 6°
🌧️ 0% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 33.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:33 AM
🌇 Sunset: 08:01 PM
🌙 New Moon
🌑 Moon: 0% lit

Best Time to Visit Jefferson

Plan your trip to Jefferson, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Jefferson 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Jefferson?
Current conditions in Jefferson: Clear, temperature 14°C, humidity 100%.
What is the best time to visit Jefferson?
The best time to visit Jefferson is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Jefferson?
Jefferson is located at approximately 42° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Jefferson?
The wettest period in Jefferson is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Jefferson?
For visits to Jefferson during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Jefferson in?
Jefferson is located in United States, in the state of Iowa.
What are the public holidays in Jefferson in 2026?
View the 2026 public holidays for Jefferson on our Holidays page.
What are the GPS coordinates used for the weather forecast in Jefferson?
The weather forecast for Jefferson uses coordinates 42.0161, -94.3741.