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Borough of Millheim, PAMillheim, PA Weather Forecast
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Millheim Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  |  |  |  | |  |  | | | | |
| Patchy Fog | Mostly Cloudy | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Sunny | Partly Cloudy | Mostly Sunny | Mostly Cloudy | Partly Sunny | Partly Cloudy |
| Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 60°FLo: 16°C |
| POP: 70% | POP: 70% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 900 AM EDT Tue Sep 08 2026 
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Issued: 659 AM EDT Tue Sep 8 2026
Key Messages
1) Uptick in heat and humidity for midweek.
2) Showers, storms, and gusty winds Wednesday night into Thursday.
Discussion
... KEY MESSAGE 1: Uptick in heat and humidity for midweek.
Fog forming in the valleys of the northern and central mtns as of 06Z. Should be just as, in not more, extensive than Mon AM. The fog should burn away early this morning in most places, but could take until 10 AM in the deepest, darkest recesses of Central PA.
Abundant sunshine, mixed with some flat cumulus an...