Postville, IA Weather

Allamakee County10:48 AM CDT43.08°N, 91.57°WElevation 1,181 ft

Current conditions

Clear
57°
Clear
Feels like 57°
High 73°·Low 52°
WindSSE 10 mph
Humidity77%
Dew point50°
Pressure30.27 inHg
Visibility10.0 mi
Cloud cover58%
UV index1 Low
Sunrise7:31 AM
Sunset6:11 PM

Observed at Decorah · 1 hr ago

Forecast

10-day

  • Saturday

    Mostly sunny, with a high near 73. South wind 10 to 14 mph, with gusts as high as 24 mph.

  • Saturday Night

    Mostly cloudy, with a low around 52. Southwest wind 2 to 10 mph.

  • Sunday

    Partly sunny, with a high near 66. North wind around 2 mph.

National Weather Service forecast updated 1 day ago.

Hourly

Hourly forecast
  1. Now Partly Sunny 60°
  2. 11 AM Partly Sunny 63°
  3. 12 PM Mostly Sunny 66°
  4. 1 PM Mostly Sunny 69°
  5. 2 PM Mostly Sunny 71°
  6. 3 PM Mostly Sunny 72°
  7. 4 PM Mostly Sunny 73°
  8. 5 PM Mostly Sunny 71°
  9. 6 PM Partly Cloudy 69°
  10. 7 PM Partly Cloudy 66°
  11. 8 PM Partly Cloudy 63°
  12. 9 PM Partly Cloudy 62°
  13. 10 PM Mostly Cloudy 61°
  14. 11 PM Mostly Cloudy 59°
  15. Sun12 AM Mostly Cloudy 58°
  16. 1 AM Mostly Cloudy 57°
  17. 2 AM Mostly Cloudy 56°
  18. 3 AM Mostly Cloudy 55°
  19. 4 AM Mostly Cloudy 54°
  20. 5 AM Mostly Cloudy 53°
  21. 6 AM Mostly Cloudy 52°
  22. 7 AM Mostly Cloudy 52°
  23. 8 AM Mostly Cloudy 53°
  24. 9 AM Partly Sunny 55°

10-day forecast

Details
  1. TonightOct 22 Mostly Clear Mostly Clear52°
  2. FriOct 23 Mostly Sunny Mostly Sunny10%55°72°
  3. TodayOct 24 Mostly Sunny Mostly Sunny52°73°
  4. SunOct 25 Partly Sunny Partly Sunny48°66°
  5. MonOct 26 Mostly Cloudy Mostly Cloudy14%45°61°
  6. TueOct 27 Slight Chance Rain Showers Slight Chance Rain Showers19%48°60°
  7. WedOct 28 Partly Sunny then Slight Chance Rain Showers Partly Sunny then Slight Chance Rain Showers33%47°65°
  8. ThuOct 29 Chance Rain Showers Chance Rain Showers30%61°
  9. FriOct 30 Sunny Sunny33°44°
  10. SatOct 31 Cloudy Cloudy0.02 in34°53°

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 in Iowa

More weather news
  • Iowa weather: A warm weekend before spotty showers next week

    We'll have a great day for outdoor plans this Saturday with highs warmer than average in the upper 70s with a mix of sun and clouds. It'll be less gusty compared to yesterday but still breezy with gusts up to 20mph…

    KCCI·4 hrs ago
  • Iowa weather: Warm days continue into the weekend

    We will continue to enjoy sunny weather for the rest of the week. Today is no exception, with highs in the mid- to upper-70s and south winds around 5 to 10 mph. A light layer may still be warranted for some of us, with…

    KCCI·2 days ago
  • Corn and Soybean Harvest Behind Schedule in Iowa, First Frost of Season Seen

    Corn and soybean harvest is behind schedule in Iowa. Ninety-eight percent of corn has reached maturity, which is even with the five-year average. Twenty-six percent of corn has been harvested, which is 24 percentage…

    kciiradio.com·3 days ago
  • Iowa weather: Warm, dry conditions will come to an end next week

    Clouds will linger a bit this morning, but most of the state will stay dry. Interactive Radar | Weather Alerts | Skycams There have been a few showers early this morning to the south and west, but the moisture is…

    KCCI·3 days ago
  • Warm and dry weather pattern holds across Iowa

    KWWL Unseasonably warm and dry conditions will continue tonight across Waterloo and much of Iowa. Patchy morning fog is possible, with a chance of rain returning this weekend.

    KWWL·3 days ago
  • Thanksgiving weather predictions are out. What almanacs say for Iowa.

    Iowa has finally been blessed with sunshine after September became the wettest month in 112 years. But will that sunshine last until Thanksgiving? Thanksgiving in 2026 falls on Thursday, Nov. 26. The holiday is always…

    Yahoo News·3 days ago
  • Sunny skies, warm temperatures across central Iowa today

    Sunny skies are expected today across central and northern Iowa as warm conditions persist. High temperatures will reach the low 70s, with breezy conditions possible in northwest Iowa during the afternoon with gusts up…

    KWWL·4 days ago
  • Iowa weather: 70s and sunshine continues

    Another great day for outdoor plans is ahead for our Tuesday. High pressure is in place to our east, which will keep us dry all day. Our temperatures are still warmer than average, and we'll top out in the low 70s…

    KCCI·4 days ago
  • Lane shift planned on Mount Vernon Drive in Iowa City

    Drivers on Mount Vernon Drive in Iowa City should expect shifted lanes starting Tuesday, Oct. 20, weather permitting.The lane shift will affect the stretch betw ... Lane shift planned on Mount Vernon Drive in Iowa City…

    KGAN·5 days ago
  • Iowa weather: Dry day before gradual warmup

    It'll be a great day for outdoor plans with highs in the mid 60s and plenty of sunshine. High pressure to our east will keep our skies clear. It'll feel breezy with a wind out of the south gusting up to 25 mph at times…

    KCCI·6 days ago

Air quality

56
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • SatModerate (72)
  • SunModerate (71)

Northeast Iowa, 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 7:31 AM
Sunset 6:11 PM
Daylight 10 h 39 min (−2 min 44 s tomorrow)
Waxing Gibbous · 97% lit
Moonrise 5:03 PM Moonset 5:46 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 37°
Month to date2.25 in (normal 2.08 in)

Decorah, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in ARX, issued 15 hrs ago

Key Messages

- Low potential for light rainfall this afternoon/evening and again late Saturday, but mostly dry conditions continue through Sunday.

- Greater rainfall potential exists Monday into Tuesday (40-70%) though the heaviest rain amounts look to stay northwest of the area. Additional potential exists mid next week.

- Temperatures trend cooler next week, but look to remain above normal.

Discussion

Issued at 100 PM CDT Fri Oct 23 2026

This Afternoon - Sunday: Mostly Dry, Low Precipitation Potential

Primarily dry conditions continue throughout the rest of this afternoon and through much of the weekend as upper level ridging slowly shifts eastward. However, an area of shortwave energy reflected at 700-500hPa currently over the north-central Iowa/south- central Minnesota is expected to continue lifting northward along the western side of the ridge this afternoon into the evening. 700- 500hPa positive vorticity advection and 700hPa frontogenesis associated with this shortwave trough combined with some modest mid to upper level moisture advection may result in scattered sprinkles to light showers this afternoon. Not expecting much in the way of impacts, if we even see rain at the surface at all, as dry air below 10kft depicted in RRFS/RAP/HRRR soundings acts to evaporate the bulk of any rain as it falls. However, there have been observations of light rain associated with these forcings upstream so a few hundreths of rain does not appear unreasonable.

While the shortwave trough continues working its way across our area tonight, a strong upper level low moves eastward across Canada, dragging a cold front into the Upper Midwest by late Saturday. This feature stalls out across Minnesota into northern Wisconsin as it becomes separated from the upper level support, remaining somewhere north of I-90 into Sunday. Weak moisture advects along this boundary under southerly flow as various shortwave troughs eject northward from a cutoff low across the Desert Southwest, promoting some low chances for light rain late Saturday through Sunday (10-20%).

Next Week: Greater Precipitation Potential, Trending Cooler

The stalled cold front begins to slowly sag southward late Sunday into early next week, allowing cooler air to filter into the region. There's still some uncertainty regarding what temperatures will ultimately be due to variations in how far south the boundary makes it and the influence from potential rainfall, but the 23.13z NBM mean suggests highs top out in the upper 50s to low 60s.

Aviation

Issued at 706 PM CDT Fri Oct 23 2026

Ongoing light rain scattered in nature expected to exit east of the forecast area through the evening hours. Besides low potential for FG impacts in River Valleys overnight, subsequent widespread flight impacts possible Saturday night into Sunday morning.

Arx Watches

WI...None. MN...None. IA...None.

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 4Conservative index and reflects what the press published. Terms of use.