US National Weather Service Saint Louis Missouri

US National Weather Service Saint Louis Missouri Official page for the National Weather Service St. Louis. Details: weather.gov/facebook
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06/10/2026

St Louis hit 92 degrees yesterday, June 9. That's the first 90 degree temp since... March? That's right. We hit 93 on March 26. We'll come close to topping that mark today or tomorrow but with added humidity. Stay cool out there!

There is a potential for severe weather largely north of I-70 this afternoon/evening and again tomorrow afternoon/evenin...
06/10/2026

There is a potential for severe weather largely north of I-70 this afternoon/evening and again tomorrow afternoon/evening. Today, all hazards will be possible, whereas tomorrow the hazard will primarily be damaging wind.

Hot and humid conditions for early/mid June will continue through the day on Thursday ahead of a cold front. Behind this...
06/09/2026

Hot and humid conditions for early/mid June will continue through the day on Thursday ahead of a cold front. Behind this front, cooler temperatures are expected. Another front is forecast to move through the region on Saturday, with below normal temperatures forecast Sunday into early next week.

A cold front will bring thunderstorms to the area late Wednesday and Thursday. While details on specifics with timing an...
06/09/2026

A cold front will bring thunderstorms to the area late Wednesday and Thursday. While details on specifics with timing and location are uncertain at this time, these storms will have the potential to be strong to severe. Check back later for additional details!

After two hot and humid days Tuesday and Wednesday, showers and thunderstorms will return to the area ahead of a cold fr...
06/09/2026

After two hot and humid days Tuesday and Wednesday, showers and thunderstorms will return to the area ahead of a cold front that will bring temperatures back into the 80s for Friday.

Summer is on it's way, and that means that these first several days of hot and humid conditions could take our bodies by...
06/09/2026

Summer is on it's way, and that means that these first several days of hot and humid conditions could take our bodies by surprise! We haven't acclimated to these conditions just yet, so be sure to take precautions when outside this week. Tuesday and Wednesday will be the hottest of the period, with a Heat Advisory in effect for many portions of the area. Temperatures will peak in the low to mid 90s, and with high humidity it will feel more like 100-108°F. This won't last very long though, with rain chances returning Thursday, and a cold front moving into the area Friday, temperatures will start to cool by the end of the work week.

Thunderstorms and associated heavy rainfall will be able to easily produce flash flooding across portions of Missouri an...
06/08/2026

Thunderstorms and associated heavy rainfall will be able to easily produce flash flooding across portions of Missouri and Illinois through this evening. A Flood Watch is in effect for the area through the evening. Stay alert while driving, never drive into water over the roadway!

The first round of hot and humid conditions for the season will hit us Tuesday-Wednesday. It's been some time since we'v...
06/08/2026

The first round of hot and humid conditions for the season will hit us Tuesday-Wednesday. It's been some time since we've seen heat index values in the upper 90s to low 100s and our bodies aren't used to the heat stress yet. Take extra caution this week, stay hydrated, weather light colored, loose clothing, and monitor yourself and others for signs of heat illness.

Summer heat and thunderstorm chances will be the main impacts this week. Some thunderstorms will be capable of producing...
06/08/2026

Summer heat and thunderstorm chances will be the main impacts this week. Some thunderstorms will be capable of producing locally heavy rain at time, while temperatures combine with moisture to produce high heat index values Tuesday and Wednesday.

The chance of showers and thunderstorms will continue at times through Monday, highest Sunday evening through Monday eve...
06/06/2026

The chance of showers and thunderstorms will continue at times through Monday, highest Sunday evening through Monday evening. Locally heavy rainfall is possible.

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12 Missouri Research Park Drive
St. Charles, MO
63304

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+16364418467

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