Hourly Weather Forecast - Mertztown, PA

12 AM
24°F
0%
8mph
WNW
Mostly Clear
Humidity
62%
Feels like
15°F
Dew Point
13°F
1 AM
23°F
0%
9mph
WNW
Mostly Clear
Humidity
63%
Feels like
14°F
Dew Point
13°F
2 AM
23°F
0%
8mph
WNW
Mostly Clear
Humidity
64%
Feels like
14°F
Dew Point
13°F
3 AM
23°F
0%
8mph
WNW
Clear
Humidity
65%
Feels like
14°F
Dew Point
13°F
4 AM
22°F
0%
7mph
WNW
Clear
Humidity
66%
Feels like
14°F
Dew Point
13°F
5 AM
22°F
0%
6mph
WNW
Clear
Humidity
67%
Feels like
14°F
Dew Point
13°F
6 AM
23°F
0%
6mph
NW
Mostly Clear
Humidity
65%
Feels like
16°F
Dew Point
13°F
7 AM
24°F
0%
5mph
NW
Mostly Clear
Humidity
64%
Feels like
17°F
Dew Point
13°F
7:22 AM
8 AM
25°F
0%
5mph
NW
Mostly Sunny
Humidity
61%
Feels like
19°F
Dew Point
13°F
9 AM
26°F
0%
5mph
NW
Mostly Sunny
Humidity
58%
Feels like
20°F
Dew Point
13°F
10 AM
28°F
0%
6mph
NW
Mostly Sunny
Humidity
54%
Feels like
21°F
Dew Point
13°F
11 AM
29°F
0%
6mph
NW
Mostly Sunny
Humidity
52%
Feels like
23°F
Dew Point
14°F
12 PM
31°F
0%
6mph
NW
Partly Cloudy
Humidity
49%
Feels like
25°F
Dew Point
14°F
1 PM
33°F
0%
6mph
NW
Partly Cloudy
Humidity
47%
Feels like
27°F
Dew Point
15°F
2 PM
33°F
0%
6mph
NW
Partly Cloudy
Humidity
48%
Feels like
28°F
Dew Point
16°F
3 PM
32°F
0%
5mph
NW
Mostly Cloudy
Humidity
51%
Feels like
28°F
Dew Point
16°F
4 PM
31°F
0%
4mph
NW
Cloudy
Humidity
54%
Feels like
27°F
Dew Point
17°F
4:39 PM
5 PM
29°F
0%
3mph
NW
Cloudy
Humidity
59%
Feels like
26°F
Dew Point
17°F
6 PM
28°F
0%
3mph
WNW
Cloudy
Humidity
64%
Feels like
28°F
Dew Point
17°F
7 PM
27°F
10%
2mph
WNW
Cloudy
Humidity
66%
Feels like
27°F
Dew Point
17°F
8 PM
27°F
10%
3mph
WNW
Cloudy
Humidity
68%
Feels like
27°F
Dew Point
17°F
9 PM
26°F
10%
2mph
WNW
Cloudy
Humidity
69%
Feels like
26°F
Dew Point
18°F
10 PM
26°F
10%
2mph
W
Cloudy
Humidity
69%
Feels like
26°F
Dew Point
18°F
11 PM
26°F
10%
2mph
W
Cloudy
Humidity
70%
Feels like
26°F
Dew Point
17°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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