Hourly Weather Forecast - Portsmouth, IA

12 AM
42°F
0%
7mph
SSE
Clear
Humidity
39%
Feels like
37°F
Dew Point
19°F
1 AM
41°F
0%
8mph
S
Clear
Humidity
40%
Feels like
36°F
Dew Point
19°F
2 AM
40°F
0%
8mph
S
Clear
Humidity
42%
Feels like
35°F
Dew Point
19°F
3 AM
40°F
0%
9mph
S
Clear
Humidity
43%
Feels like
34°F
Dew Point
19°F
4 AM
39°F
0%
9mph
S
Clear
Humidity
45%
Feels like
33°F
Dew Point
19°F
5 AM
38°F
0%
10mph
S
Clear
Humidity
47%
Feels like
31°F
Dew Point
20°F
6 AM
37°F
0%
10mph
SSE
Clear
Humidity
49%
Feels like
31°F
Dew Point
20°F
7 AM
38°F
0%
10mph
SSE
Clear
Humidity
49%
Feels like
31°F
Dew Point
20°F
7:10 AM
8 AM
40°F
0%
11mph
S
Mostly Sunny
Humidity
48%
Feels like
33°F
Dew Point
22°F
9 AM
43°F
0%
13mph
S
Mostly Sunny
Humidity
45%
Feels like
36°F
Dew Point
23°F
10 AM
46°F
0%
14mph
S
Mostly Sunny
Humidity
41%
Feels like
40°F
Dew Point
24°F

Today's Weather Outlook

Today's Weather Outlook

Rain and snow will slide through the Northeast while drier weather continues in the Central and Western U.S.

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Sun Safety: Protect Your Skin During Spring

Pile of hail after a hail storm hits Perth.

How Does Hail Form?

(Image provided by Pixabay.com)

Lightning Safety

This John Deere riding mower continues to hum along. (Wikimedia Commons)

Spring Mower and Power Tool Seasonal Checklist

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