NWS Key West (@NWSKeyWest) / X

NWS Key West

29.2K posts

NWS Key West

@NWSKeyWest

Extending the reach of NWS information to the Florida Keys. Visit goo.gl/C9g6i for details & feedback. Cover photo credit to Merideth Rue 6/16/17.

Key West, Florida

Joined May 2012

NWS Key West
@NWSKeyWest
4h
Other than an isolated stray shower this morning, it's expected to be mainly dry again for today. Highs will top out near 90° with dew points in the upper 70s. This will once again result in heat index values of 103-108°, especially for the Upper Keys. #FloridaKeys #FLwx
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NWS Key West
@NWSKeyWest
8h
Perhaps not surprisingly, the lows of 84°F at Key West & Marathon held yesterday, setting a new daily warm low record at Key West & tying the record for Marathon. Previous records: #KeyWest 83°, most recently set in 2025 & #MarathonFL's 84° was most recently tied in 2013. #flwx
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NWS Key West
@NWSKeyWest
16h
Warm days have been transitioning into even warmer nights (when comparing both to normal). Key West & Marathon's lows of 84°F are 4° & 5° above the long-term average, respectively. If these lows hold, #KeyWest will set a new daily warm low record & #MarathonFL will tie. #flwx
484
NWS Key West
@NWSKeyWest
Jun 18
Despite the sultry conditions, we're expecting mainly dry weather over the next few days. Rain chances will be 10% or less through the upcoming weekend. Meanwhile, heat index values will range from 103-108°, especially in the Upper Keys. #FLwx #FloridaKeys #BeatTheHeat
397
NWS Key West
@NWSKeyWest
Jun 18
Low temperatures of 84°F at Key West & Marathon yesterday tied the daily warm low temperature records at both sites. This record was previously set at Key West in 2023 (most recently) & at Marathon in 2013 (also most recently.) #flwx #FloridaKeys #FLKeys #KeyWest #MarathonFL
378
NWS Key West
@NWSKeyWest
Jun 17
Just a slight chance of showers/storms again tonight, with lows in the lower 80s & SE-S winds ~10 mph, decreasing to 5-10 mph. Dew points ~80°F to keep heat index values elevated for remainder of the week, especially for the Upper #FLKeys where values could exceed 105°F. #flwx
382
NWS Key West
@NWSKeyWest
Jun 17
We have our first named storm of the Atlantic Hurricane Season! Anyone with interests near & along the Gulf Coast of Texas and Louisiana should monitor Tropical Storm Arthur forecasts, watches, warnings, and updates at hurricanes.gov ! #NHC #Arthur #TropicalStormArthur
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NWS Key West
@NWSKeyWest
Jun 17
We have our first named storm of the Atlantic Hurricane Season! Anyone with interests near & along the Gulf Coast of Texas and Louisiana should monitor Tropical Storm Arthur forecasts, watches, warnings, and updates at hurricanes.gov ! #NHC #Arthur #TropicalStormArthur
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NWS Key West
@NWSKeyWest
Jun 17
❓Want to learn more about tropical cyclones & how to prepare for the hazards? Sign up for virtual Florida Tropical Training week presented by FL National Weather Service meteorologists. ⏰ 3 sessions daily July 21st- 24th, register & learn more here⬇️ weather.gov/jax/FTTW2026
1.6K
NWS Key West
@NWSKeyWest
Jun 17
We are expecting an Elevated Heat Risk (2 of 4) for much of the #FloridaKeys (esp. Upper Keys). Make sure you know how to recognize the signs of heat exhaustion before it becomes heat stroke! Also check in on neighbors, especially elderly or those who are heat-sensitive. #FLwx
406
NWS Key West
@NWSKeyWest
Jun 16
Another night on the drier side as our quieter weather pattern continues. Heat index values on Wed./Thu., especially for Upper Keys, could exceed 105°F. Heat Safety Tips: When performing outdoor activities stay hydrated, take frequent breaks, & wear light clothing. #flwx #FLKeys
370
NWS Key West
@NWSKeyWest
Jun 16
The National Hurricane Center has issued its first advisories on Potential Tropical Cyclone One, located about 55 miles SSW of Corpus Christi, Texas. The main impact for the system will be very heavy rainfall over portions of Texas & Louisiana through Thursday. #FLwx #FloridaKeys
371
NWS Key West
@NWSKeyWest
Jun 16
Mainly dry, warm, & muggy conditions for the #FloridaKeys. We will see heat index values reaching or exceeding 100°, resulting in Limited (1 of 4) to Elevated (2 of 4) Heat Risk. Stay safe out there and be sure to check in on neighbors who may be more vulnerable! #FLwx
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