March is supposed to be spring, but someone forgot to tell the Southwest — Gilbert, AZ and San Bernardino, CA both shattered their March 18 records by a jaw-dropping 15°, blowing past century marks that hadn't been touched since the 1950s and '60s. Las Vegas and Fresno are also running a full month and a half ahead of schedule on their first 90°+ days of the year, while Detroit and Cleveland are stuck in a freeze more than 30° colder than this exact date last year.

1. Mexicali, Baja California, Mexico: Today's high of 104° would set a new record for March 18 (old record: 95° in 1939)
2. Imperial, CA: Today's high of 104° would set a new record for March 18 (old record: 96° in 1907)
3. Gilbert, AZ: Today's high of 100° would set a new record for March 18 (old record: 85° in 1956)
4. Ann Arbor, MI: With 3.4" of precipitation, this is the wettest start to March in 134 years
5. Sharonville, OH: With 5.6" of precipitation, this is the 2nd wettest March through the 18th in 28 years
6. Forest Park, OH: With 5.6" of precipitation, this is the 2nd wettest March through the 18th in 28 years
7. Los Angeles, CA: First 90°+ day of 2026 — 46 days earlier than average
8. Kansas City, MO: First 70°+ day of 2026
9. San Jose, CA: First 80°+ day of 2026 — 19 days earlier than average
10. Columbus, OH: Last year on this date: 71°. Today: 39°. A 32° colder swing.