Hourly Weather Forecast - Mertztown, PA

12 AM
23°F
0%
7mph
WNW
Mostly Clear
Humidity
54%
Feels like
14°F
Dew Point
9°F
1 AM
22°F
0%
7mph
NW
Mostly Clear
Humidity
55%
Feels like
14°F
Dew Point
8°F
2 AM
21°F
0%
6mph
NW
Mostly Clear
Humidity
57%
Feels like
13°F
Dew Point
8°F
3 AM
20°F
0%
5mph
NW
Clear
Humidity
59%
Feels like
13°F
Dew Point
8°F
4 AM
19°F
0%
5mph
NW
Clear
Humidity
62%
Feels like
12°F
Dew Point
8°F
5 AM
19°F
0%
4mph
NW
Clear
Humidity
64%
Feels like
13°F
Dew Point
9°F
6 AM
20°F
0%
4mph
NW
Clear
Humidity
63%
Feels like
13°F
Dew Point
9°F
7 AM
20°F
0%
4mph
WNW
Clear
Humidity
61%
Feels like
15°F
Dew Point
9°F
7:21 AM
8 AM
22°F
0%
4mph
WNW
Sunny
Humidity
59%
Feels like
16°F
Dew Point
10°F
9 AM
23°F
0%
4mph
W
Sunny
Humidity
58%
Feels like
18°F
Dew Point
10°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

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

Cold Air Damming - Cause And Effects

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