The second blast of chilly, non-typical August air in a week moved in parts of the Northern Rockies and Upper Midwest this past weekend, bringing areas highs only in the 60s and some morning record lows. This cool air will continuing moving east into the work week for some locations, with more records possible all the way into the southeast.
Record Breaking Lows Set Sunday Morning
After a strong cold front moved through the region, temperatures dropped like a rock in parts of the northern Rockies Sunday morning. These lows were easily a good 10-20 degrees below average for this time of year. Some parts of the region dropped into the 40s and 30s – some of the coldest temperatures this early into the cool season. Overall, 26 National Weather Service climate locations tied or broke record lows Sunday morning.
One of those chilly spots was in Casper, WY. The morning low Sunday, under clear skies and the post frontal air, dipped down to 29 degrees. That not only shattered the previous record for the day of 41 in 1966, but also is the coldest temperature ever in the month of August. The previous coldest August low was 33 degrees set on August 31, 1977. It also was the earliest first freeze for the Oil City, the previous being September 1st of 1965.
In Worland, WY, the low dropped to 35 degrees Sunday morning. This broke the previous record for the day, and was the second coldest low recorded in August.
Rapid City, SD, tied their coldest August morning low of 38 degrees Sunday morning. That value was also reached on August 30th, 1992 and August 22, 1966. The 38 degree value also broke the record for the day.
Other locations breaking record lows Sunday morning included:
- Scottsbluff, NE – 37 (previous: 41 in 1942)
- Bozeman, MT – 32 (previous: 33 in 1992)
- Cheyenne, WY – 38 (previous: 40 in 1896)
- Miles City, MT – 35 (previous: 40 in 1966)
- Pocatello, ID – 36 (tying previous set in 1988 and 1978)
- Yellowstone Lake, WY – 27 (previous: 28 in 2008)
Chilly Air Spreads East
We’ll continue to see that chilly August air continue to move south and east over the next few days. Taking a look at highs today across the nation, 70s will dip down into the Ohio Valley, and there some areas of the northern Great Lakes that will struggle to get out of the 50s. These temperatures will again be a good 5-20 degrees below average for this time of year. This air will continue to sink southeast heading into Tuesday and Wednesday, and while temperatures may not feel that cold (only 5-10 degrees below average), it will at least usher in some drier air to the region.
(MAPS: Forecast Highs and Lows)
Not only will daytime temperatures be on the cool side, but parts of the south and southeast seeing record cold lows the next few mornings. Already this morning, a record low was set in Garden City, KS, with a low of 52 – besting the previous record of 53 set in 1966.
Here’s a look at some potential lows vs. records Tuesday morning:
- Omaha, NE: 48 (47)
- Sioux City, IA: 44 (44)
- Tulsa, OK: 56 (57)
- Paducah, KY: 53 (53)
- Jackson, KY: 53 (55)
And a look at some potential lows vs. records Wednesday morning:
- Montgomery, AL: 61 (60)
- Mobile, AL: 61 (64)
- Pensacola, FL: 67 (66)
- Bristol, TN: 51 (50)
- Tupelo, MS: 57 (56)
Are you enjoying the chilly August mornings? Or would you rather prefer the dog days of summer? Let us know in the comments under this post, or comment on our Facebook page. You can even send us a tweet if you’d like!
(CHECK OUT YOUR FORECAST: wx.aerisweather.com)
– Meteorologist D.J. Kayser