Key West, FL Weather Forecast | 5 Day
Updated: Fri Sep 18th 2026 5:15 PM EDT
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Scattered Showers
Fri 9-18-26
Scattered Showers with a high of 85°F and a low of 84°F. It will likey rain, having a 76% chance of a downpour with an estimated 0.25in. Wind will be moderate, blowing around 15mph on average and gusts of 11.9mph at 11 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 72% at 11 PM and 68% being its lowest at 8 PM. Barometric pressure is its highest of 29.97inHg at 10 PM, a lowest point of 29.93inHg at 8 PM with an avg 29.95inHg.
- HI: 85°F
- LO: 84°F
- Rainfall: 76% | est. 0.25in
- Snowfall: 0%
- Wind
14.3 mph - Humidity
71% avg. - UV Index
9.2 - Air QualityGood
- Sunrise
07:14 AM - Sunset
07:27 PM - Moonrise
02:30 PM - Moonset
12:05 AM - Moon Phase
First Quarter
Overcast
Weather Tomorrow, Sat 9-19-26
Overcast with a high of 85°F and a low of 80°F. It will likey rain, having a 78% chance of a downpour with an estimated 0.32in. Wind will be moderate, blowing around 17mph on average and gusts of 24.4mph at 6 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 78% at 5 PM and 64% being its lowest at 8 PM. Barometric pressure is its highest of 29.95inHg at 12 AM, a lowest point of 29.87inHg at 7 PM with an avg 29.92inHg.
- HI: 85°F
- LO: 80°F
- Rainfall: 78% | est. 0.32in
- Snowfall: 0%
- Wind
17 mph - Humidity
70% avg. - UV Index
4.1 - Air QualityGood
- Sunrise
07:14 AM - Sunset
07:26 PM - Moonrise
03:19 PM - Moonset
12:59 AM - Moon Phase
First Quarter
Sunny
Sun 9-20-26
Sunny with a high of 85°F and a low of 82°F. There's a moderate 36% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 13mph on average and gusts of 19mph at 12 AM. The humidity will be on the higher side, averaging about 66%, the maximum being 74% at 12 AM and 62% being its lowest at 5 PM. Barometric pressure is its highest of 29.93inHg at 1 PM, a lowest point of 29.84inHg at 6 PM with an avg 29.89inHg.
- HI: 85°F
- LO: 82°F
- Rainfall: 36% | est. 0.01in
- Snowfall: 0%
- Wind
12.3 mph - Humidity
66% avg. - UV Index
10.3 - Air QualityGood
- Sunrise
07:14 AM - Sunset
07:25 PM - Moonrise
04:02 PM - Moonset
01:54 AM - Moon Phase
Waxing Gibbous
Overcast
Mon 9-21-26
Overcast with a high of 85°F and a low of 82°F. Rainfall expected to have a 74% chance with an estimated 0.18in. Wind will be moderate, blowing around 17mph on average and gusts of 25.5mph at 2 AM. The humidity will be on the higher side, averaging about 67%, the maximum being 72% at 11 PM and 63% being its lowest at 6 PM. Barometric pressure is its highest of 29.94inHg at 12 PM, a lowest point of 29.84inHg at 6 PM with an avg 29.89inHg.
- HI: 85°F
- LO: 82°F
- Rainfall: 74% | est. 0.18in
- Snowfall: 0%
- Wind
16.6 mph - Humidity
67% avg. - UV Index
10.2 - Air QualityGood
- Sunrise
07:15 AM - Sunset
07:24 PM - Moonrise
04:41 PM - Moonset
02:50 AM - Moon Phase
Waxing Gibbous
Overcast
Tue 9-22-26
Overcast with a high of 85°F and a low of 83°F. Rainfall expected to have a 72% chance with an estimated 0.2in. Wind will be moderate, blowing around 14mph on average and gusts of 20.1mph at 12 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 76% at 12 AM and 64% being its lowest at 8 PM. Barometric pressure is its highest of 29.96inHg at 11 PM, a lowest point of 29.87inHg at 5 AM with an avg 29.92inHg.
- HI: 85°F
- LO: 83°F
- Rainfall: 72% | est. 0.2in
- Snowfall: 0%
- Wind
13.4 mph - Humidity
68% avg. - UV Index
7 - Air QualityGood
- Sunrise
07:15 AM - Sunset
07:23 PM - Moonrise
05:15 PM - Moonset
03:44 AM - Moon Phase
Waxing Gibbous
Overcast
Wed 9-23-26
Overcast with a high of 85°F and a low of 81°F. It will likey rain, having a 80% chance of a downpour with an estimated 0.31in. Wind will be moderate, blowing around 14mph on average and gusts of 23.9mph at 5 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 77% at 8 PM and 66% being its lowest at 11 AM. Barometric pressure is its highest of 29.99inHg at 8 PM, a lowest point of 29.9inHg at 5 AM with an avg 29.96inHg.
- HI: 85°F
- LO: 81°F
- Rainfall: 80% | est. 0.31in
- Snowfall: 0%
- Wind
13.2 mph - Humidity
71% avg. - UV Index
6 - Air QualityTBA
- Sunrise
07:16 AM - Sunset
07:22 PM - Moonrise
05:47 PM - Moonset
04:37 AM - Moon Phase
Waxing Gibbous
This 5-Day weather forecast is relevant for ZIP codes 33040, 33041, and 33045, accurately covering areas of Key West, FL.
Currently
|
85°F |
29.94 inHg.
Barometer 69%
Humidity ENE 9.7 mph Wind |
| Overcast | ||
National Outlook
Heavy Rain in North-Central U.S. & Scorching Heat in South-Central U.S. - 09-18 to 09-20
Fri Sep 18th 2026, 5:45am PDT
Read
Wet Weather with Possible Flood Concerns in the Southern Regions 09-21 to 09-25
Extended Forecast
Fri Sep 18th 2026, 5:56am PDT
Read
Fri Sep 18th 2026, 5:56am PDT
5 Day Forecast Nearby
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