National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

A Couple of Fast Moving Storms Affecting Areas Along and East of the Rockies

A couple of storm systems will impact travel conditions through the first half of this weekend. Heavy snow from the mountains of the West will move into the upper Midwest and upper Great Lakes through tonight. Record warmth and Gulf moisture along and east of the Mississippi River will fuel severe thunderstorms, heavy rainfall, fog for the Tennessee Valley and deep South on Friday into Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fog/Mist

39°F

4°C

Humidity 100%
Wind Speed E 5 mph
Barometer 29.42 in
Dewpoint 39°F (4°C)
Visibility 2.50 mi
Wind Chill35°F (2°C)
Last update 8 Jan 1:35 pm CST
Extended Forecast for

Portsmouth IA

  • This Afternoon

    This Afternoon: Rain. High near 43. North wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain and snow before 1am, then a slight chance of rain between 1am and 2am. Low around 27. North northwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 27 °F

    Rain/Snow
    then Chance
    Rain/Snow

  • Friday

    Friday: Increasing clouds, with a high near 37. North northwest wind 5 to 10 mph, with gusts as high as 17 mph.

    High: 37 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 24. Northwest wind around 6 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 31. Northwest wind 7 to 17 mph, with gusts as high as 25 mph.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 13. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 13 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 31. Northwest wind 6 to 10 mph becoming south southwest in the afternoon.

    High: 31 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 46. West southwest wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain. High near 43. North wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Rain and snow before 1am, then a slight chance of rain between 1am and 2am. Low around 27. North northwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 37. North northwest wind 5 to 10 mph, with gusts as high as 17 mph.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 24. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 31. Northwest wind 7 to 17 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 13. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 31. Northwest wind 6 to 10 mph becoming south southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 25. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.
Monday
Mostly sunny, with a high near 46. West southwest wind 6 to 10 mph, with gusts as high as 16 mph.
Monday Night
Mostly cloudy, with a low around 33. Southwest wind around 6 mph.
Tuesday
A slight chance of rain. Partly sunny, with a high near 49. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 28. North northwest wind 11 to 13 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 36. North northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.53°W (Elev. 1250 ft)
Last Update:
1:11 pm CST Jan 8, 2026
Forecast Valid:
1pm CST Jan 8, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation