Hourly Weather Forecast - Mertztown, PA

12 AM
33°F
10%
6mph
SSW
Cloudy
Humidity
68%
Feels like
28°F
Dew Point
24°F
1 AM
34°F
10%
5mph
SSW
Cloudy
Humidity
69%
Feels like
29°F
Dew Point
25°F
2 AM
34°F
10%
5mph
SW
Cloudy
Humidity
70%
Feels like
29°F
Dew Point
25°F
3 AM
34°F
10%
5mph
SW
Cloudy
Humidity
71%
Feels like
29°F
Dew Point
26°F
4 AM
34°F
0%
5mph
SW
Cloudy
Humidity
72%
Feels like
30°F
Dew Point
26°F
5 AM
35°F
0%
5mph
WSW
Mostly Cloudy
Humidity
73%
Feels like
30°F
Dew Point
27°F
6 AM
35°F
0%
5mph
WSW
Partly Cloudy
Humidity
72%
Feels like
30°F
Dew Point
27°F
7 AM
35°F
0%
5mph
WSW
Partly Cloudy
Humidity
71%
Feels like
31°F
Dew Point
27°F
7:22 AM
8 AM
36°F
0%
6mph
W
Mostly Sunny
Humidity
69%
Feels like
31°F
Dew Point
27°F
9 AM
37°F
0%
8mph
W
Mostly Sunny
Humidity
65%
Feels like
31°F
Dew Point
26°F
10 AM
38°F
0%
9mph
W
Sunny
Humidity
60%
Feels like
32°F
Dew Point
26°F
11 AM
39°F
0%
10mph
W
Sunny
Humidity
55%
Feels like
33°F
Dew Point
25°F
12 PM
40°F
0%
11mph
W
Sunny
Humidity
51%
Feels like
33°F
Dew Point
23°F
1 PM
39°F
0%
11mph
W
Sunny
Humidity
49%
Feels like
32°F
Dew Point
21°F
2 PM
37°F
0%
11mph
W
Sunny
Humidity
49%
Feels like
30°F
Dew Point
20°F
3 PM
35°F
0%
11mph
WNW
Sunny
Humidity
50%
Feels like
27°F
Dew Point
18°F
4 PM
33°F
0%
11mph
WNW
Sunny
Humidity
52%
Feels like
25°F
Dew Point
17°F
4:38 PM
5 PM
30°F
0%
10mph
WNW
Clear
Humidity
54%
Feels like
22°F
Dew Point
16°F
6 PM
28°F
10%
9mph
WNW
Clear
Humidity
56%
Feels like
19°F
Dew Point
15°F
7 PM
27°F
10%
9mph
WNW
Clear
Humidity
58%
Feels like
18°F
Dew Point
14°F
8 PM
26°F
10%
9mph
WNW
Clear
Humidity
59%
Feels like
16°F
Dew Point
13°F
9 PM
25°F
10%
9mph
WNW
Clear
Humidity
61%
Feels like
15°F
Dew Point
13°F
10 PM
24°F
10%
9mph
WNW
Clear
Humidity
61%
Feels like
15°F
Dew Point
13°F
11 PM
24°F
10%
9mph
WNW
Clear
Humidity
62%
Feels like
15°F
Dew Point
13°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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