Heat wave could hit Twin Cities with a record 90-degree temperature on Friday

Thermometers in the Twin Cities could hit 90 on Friday, a mark that would tie a record that dates back to 1997.

Why it matters: Another late-September/early October heat wave underscores a major shift here, with autumn feeling like an extension of summer due to climate change.

• As meteorologist Paul Douglas noted on TPT's Almanac, this warm weather could mean dull fall colors.

Stunning stat: September 2024 was the hottest September on record in the Twin Cities, barely edging out 2023.

• With highs reaching the mid-80s yesterday and likely again today, 2025 could crack the top 10.

Context: The normal high for this time of year is around 65, per the Minnesota DNR.

Threat level: Two years ago, organizers cancelled the Twin Cities Marathon due to a forecasted high of 90.

• NWS is predicting a cooldown starting this weekend. Sunday — race day — is only projected to hit 74.

What we're watching: That cooldown will continue. Douglas shared one model showing a high of just 46 on Oct. 13.