Arctic Front Brings Winter Weather and Colder Temperatures to the Eastern U.S.

A series of cold fronts will bring heavy lake effect snow to the northern Great Lakes. The fronts will merge over the Ohio Valley and bring colder temperatures east of the Mississippi River later today into the end of the week. Additionally, wintry weather will develop over the Ohio Valley, Appalachians, and Northeast as rain switches over to snow tonight into Thursday morning. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fair

28°F

-2°C

Humidity	40%
Wind Speed	N 18 G 26 mph
Barometer	30.25 in
Dewpoint	7°F (-14°C)
Visibility	10.00 mi
Wind Chill	15°F (-9°C)
Last update	14 Jan 2:55 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Portsmouth IA

Tonight
Low: 16 °F
Increasing
Clouds
Thursday
High: 41 °F
Mostly Cloudy
then Slight
Chance
Rain/Snow
Thursday Night
Low: 26 °F
Partly Cloudy
then Chance
Flurries and
Blustery
Friday
High: 32 °F
Chance Snow
and Windy
Friday Night
Low: 6 °F
Mostly Cloudy
and Windy
Saturday
High: 11 °F
Partly Sunny
and Blustery
Saturday Night
Low: 0 °F
Partly Cloudy
Sunday
High: 27 °F
Mostly Sunny
then Partly
Sunny and
Breezy
Sunday Night
Low: 5 °F
Mostly Cloudy

Detailed Forecast

Tonight

Increasing clouds, with a low around 16. North northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 16 mph.

Thursday

A chance of sprinkles before 3pm, then a slight chance of rain and snow showers between 3pm and 5pm, then a chance of sprinkles after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 41. South southwest wind 6 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

Thursday Night

A chance of flurries after midnight. Partly cloudy, with a low around 26. Blustery, with a west northwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 36 mph.

Friday

A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 32. Windy, with a west northwest wind 23 to 30 mph, with gusts as high as 40 mph.

Friday Night

Mostly cloudy, with a low around 6. Windy, with a northwest wind 23 to 28 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 38 mph.

Saturday

Partly sunny, with a high near 11. Blustery, with a north northwest wind 15 to 18 mph, with gusts as high as 29 mph.

Saturday Night

Partly cloudy, with a low around 0. North northwest wind 8 to 14 mph becoming west southwest after midnight. Winds could gust as high as 21 mph.

Sunday

Partly sunny, with a high near 27. Breezy, with a west southwest wind 9 to 18 mph, with gusts as high as 26 mph.

Sunday Night

Mostly cloudy, with a low around 5. North northwest wind 13 to 16 mph, with gusts as high as 24 mph.

M.L.King Day

Mostly sunny, with a high near 18. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

Monday Night

Partly cloudy, with a low around 7. Northwest wind around 7 mph becoming west southwest after midnight.