Steve Seman
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steveseman.bsky.social
Steve Seman
@steveseman.bsky.social
Director of Online Programs in Meteorology and Atmospheric Science; Associate Teaching Professor at Penn State.
Impressive early December cold: Low of 8º this morning at the PSU COOP site in State College is the lowest this early in the season since 1989.

Nowhere near a daily record though (-1º in 1917) #pawx
December 9, 2025 at 1:05 PM
We've already had 8 sub-50º mornings on campus at Penn State since the beginning of August. That's the most up to this point in September since 1994. We haven't seen this many cool, crisp mornings at this time of year in a few decades.
September 9, 2025 at 2:38 PM
A weather rarity in #StateCollege #pawx. May had 22 days with measurable precip, tying the record for any month since 1893.

The only other months with 22 days of measurable precip also happened to be Mays -- in 2003 and 1908
June 1, 2025 at 4:37 PM
With a modest 6.7" of snow so far this month, State College, PA is having its snowiest start to a calendar year since 2003. #pawx
January 7, 2025 at 12:58 PM
Temps dipped to 7º before 7 AM this morning on campus at Penn State. That's the lowest temperature this early in the season since 2016.
December 23, 2024 at 12:53 PM
Hello from State College, PA
October 10, 2024 at 11:43 PM
After another 1.35" of rain in #StateCollege through 8AM, we're up to 5.56" for the month so far.

This is by far the wettest start to April to date. Even without another drop of rain this month, we would finish with a top 15 wettest April. #pawx
April 12, 2024 at 2:37 PM
Four-day rain total of 4.09" in #StateCollege -- an immense amount for meteorological spring.

The last time we had a wetter four-day period in spring was April 1948! We won't need many more April showers this month... #pawx
April 4, 2024 at 2:36 PM
Dallas hit 94º today -- 3rd highest temperature on record in February there. The top 3 highest temps:

96º on 2/25/1904
95º on 2/21/1996
94º today
February 26, 2024 at 11:07 PM
Pea sized hail in State College, PA in February.
February 10, 2024 at 9:56 PM
State College, PA hasn't had a 1"+ snow since late January 2023 -- a streak of 344 consecutive days, the longest streak on record by more than 3 weeks.

Tomorrow is the day...
January 5, 2024 at 2:18 PM