Jefferson, IA Weather

Greene County12:22 AM CDT42.02°N, 94.38°WElevation 1,066 ft

Current conditions

Mostly Cloudy
62°
Mostly Cloudy
Feels like 62°
High 79°·Low 58° tonight
WindSSE 9 mph gusts 20 mph
Humidity69%
Dew point52°
Visibility10 mi
Cloud cover76%
UV index0 Low
Sunrise7:41 AM
Sunset6:24 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Tonight

    Mostly cloudy, with a low around 58. South southeast wind 8 to 12 mph, with gusts as high as 22 mph.

  • Saturday

    Mostly sunny. High near 79, with temperatures falling to around 77 in the afternoon. South southwest wind 7 to 12 mph, with gusts as high as 20 mph.

  • Saturday Night

    Mostly cloudy, with a low around 53. Northwest wind around 6 mph.

National Weather Service forecast updated 10 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Cloudy 62°
  2. 1 AM Mostly Cloudy 61°
  3. 2 AM Mostly Cloudy 61°
  4. 3 AM Partly Cloudy 60°
  5. 4 AM Mostly Cloudy 59°
  6. 5 AM Cloudy 59°
  7. 6 AM Mostly Cloudy 59°
  8. 7 AM Partly Sunny 59°
  9. 8 AM Mostly Sunny 58°
  10. 9 AM Sunny 61°
  11. 10 AM Mostly Sunny 66°
  12. 11 AM Sunny 70°
  13. 12 PM Mostly Sunny 74°
  14. 1 PM Partly Sunny 76°
  15. 2 PM Partly Sunny 77°
  16. 3 PM Mostly Sunny 78°
  17. 4 PM Partly Sunny 77°
  18. 5 PM Mostly Sunny 77°
  19. 6 PM Mostly Cloudy 74°
  20. 7 PM Mostly Cloudy 68°
  21. 8 PM Mostly Cloudy 65°
  22. 9 PM Partly Cloudy 62°
  23. 10 PM Mostly Cloudy 61°
  24. 11 PM Mostly Cloudy 59°

10-day forecast

Details
  1. FriOct 23 Mostly Sunny Mostly Sunny58°78°
  2. TodayOct 24 Mostly Sunny Mostly Sunny53°79°
  3. SunOct 25 Partly Sunny Partly Sunny10%48°71°
  4. MonOct 26 Slight Chance Rain Showers Slight Chance Rain Showers46%48°64°
  5. TueOct 27 Chance Rain Showers Chance Rain Showers41%49°64°
  6. WedOct 28 Slight Chance Rain Showers Slight Chance Rain Showers24%46°68°
  7. ThuOct 29 Slight Chance Rain Showers then Mostly Sunny Slight Chance Rain Showers then Mostly Sunny26%43°63°
  8. FriOct 30 Cloudy Cloudy36°51°
  9. SatOct 31 Cloudy Cloudy37°67°
  10. SunNov 1 Sunny Sunny45°66°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news near Jefferson

More weather news

Air quality

49
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • SatModerate
  • SunModerate

Des Moines, IA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:41 AM
Sunset 6:24 PM
Daylight 10 h 42 min (−2 min 37 s tomorrow)
Waxing Gibbous · 95% lit
Moonrise 5:16 PM Moonset 5:57 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low60° / 36°
Month to date3.29 in (normal 2.01 in)

Perry, records since 1900. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in DMX, issued 1 hr ago

Key Messages

- Warm and dry conditions continue Saturday. Elevated fire weather conditions in cropland.

- Rain chances increase slowly from the northwest, cooling temperatures within and to the north of rain.

- Stalled boundary will bring split weather conditions next week: Seasonal temperatures north, warm south. Rain chances remain in the picture.

Short Term

Issued at 238 PM CDT Fri Oct 23 2026

Showers hung on in northern Iowa this afternoon. Ceiling heights in observations were above 15kft and soundings show a dry sub-cloud layer. Dew points at the surface mixed into the upper 40s where clouds didn't reach and winds gusted between 20 and 30mph. Midlevel moisture will continue to be advected northward as the northern segment of the western CONUS trough ejects northward. The southern piece of the trough will remain closed off and stuck in the southwest US. Meanwhile, high pressure is stuck in the Midwest to our east. This is blocking the cold front of the northern stream wave, stalling it in northwest Iowa through the weekend. Rain chances will be in play in the north and northwest, mainly in the overnight hours. Clouds will be common across the area due to moisture advection.

The southern portion of the trough will start to fill and migrate northeast into the Plains, bringing increased rain and clouds to the area to end the weekend and begin the following week.

Long Term

Issued at 238 PM CDT Fri Oct 23 2026

On late Monday, the wave will tilt negatively across southeast South Dakota. Some CAPE is tucked right in the triple point, but the speed of the system keeps the warm sector out of the state until the overnight hours. CAPE will build on the warm sector of the front as it stalls across the middle of the state. Much of next week will have split weather between the north and southern half. The northern half will have more seasonal temperatures whereas 70 degree highs will be common across the south. Rain and some thunderstorms will remain in the picture. This pattern will remain until the east CONUS ridge is broken down by a stronger system from the west.

Aviation

Issued at 1029 PM CDT Fri Oct 23 2026

VFR conditions are expected to prevail through the TAF period. Main impact through the overnight will be LLWS particularly at KFOD/KMCW. Though surface winds near 10 knots will be present, latest analysis is showing 35-40 knot winds at 2kft with ~30 degrees of veering. The LLWS is expected to mix out shortly after sunrise. There is a low (~20%) chance of showers at KFOD/KMCW between 00-06z, and will need to be monitored for PROB30/TEMPO inclusion in future issuances.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.