Point Forecast Matrices
Issued by NWS Key West, FL

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FOUS52 KKEY 180753
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Point Forecast Matrices
National Weather Service Key West FL
353 AM EDT Fri Sep 18 2026

FLZ078-182000-
Key West-Monroe FL
24.55N  81.75W Elev. 3 ft
353 AM EDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      90          80          90          79          90
Temp          82 83 87 88 88 83 82 81 81 82 86 88 87 83 82 81 80 81 86 88 88 83
Dewpt         76 76 76 76 75 75 76 76 75 75 75 75 75 74 75 75 75 75 75 75 74 74
RH            82 80 70 68 66 77 82 85 82 79 70 66 68 74 79 82 85 82 70 66 63 74
Wind dir       E  E  E  E  E NE  E  E  E  E  E  E  E  E  E SE  S  S  S  S  S  S
Wind spd       6  5  4  4  6  6  6  6  5  4  3  3  4  4  5  6  5  4  4  4  3  3
Clouds        SC SC B1 B1 B1 SC SC B1 B1 B1 B1 SC SC B1 SC B1 SC SC SC SC SC SC
PoP 12hr                     50          60          60          50          60
QPF 12hr                   0.06        0.17        0.15        0.10        0.17
Rain shwrs     C  C  C  C  C  L  L  L  L  L  L  L  L  C  C  C  C  L  L  L  L  L
Tstms          C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C
Heat index    89 91 98 99 98 90 89 87 87 89 95 98 96 90 89 87 85 87 95 98 97 90
Max heat         91   100   100    90    89    98    99    89    87    98    98


Date          Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          79    90      80    90      79    90      79    90
Temp          81 82 88 84   82 82 88 85   82 82 88 85   82 82 88 85
Dewpt         75 75 75 74   76 76 76 75   76 77 77 76   77 77 77 76
PWind dir         S     S       S     S      SE    SE       E    SE
Wind char        LT    LT      LT    LT      LT    GN      GN    LT
Avg clouds    SC SC SC SC   B1 B1 B1 B1   B1 B2 B2 B1   B2 B2 B1 B1
PoP 12hr         60    60      70    70      70    70      70    60
Rain shwrs     L  L  L  L    L  L  L  L    L  L  L  L    L  L  L  L
Tstms          C  C  C  C    C  C  C  C    C  C  C  C    C  C  C  C

$$
FLZ077-182000-
Marathon-Monroe FL
24.72N  81.04W Elev. 5 ft
353 AM EDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      89          80          88          80          88
Temp          84 84 86 87 87 84 83 83 82 82 85 86 86 84 83 82 81 82 85 86 86 84
Dewpt         75 76 76 76 75 75 75 75 75 75 75 75 74 74 74 75 74 75 75 75 74 74
RH            74 77 72 70 68 74 77 77 79 79 72 70 68 72 74 79 79 79 72 70 68 72
Wind dir       E  E  E  E  E NE  E  E  E  E  E  E  E  E SE SE  S  S  S  S  S  S
Wind spd       6  5  4  4  5  6  8  6  5  4  4  4  4  4  6  8  5  4  4  4  4  4
Clouds        SC B1 B1 B1 SC SC SC SC B1 B1 B1 SC SC B1 SC SC SC B1 SC SC SC SC
PoP 12hr                     60          50          60          50          60
QPF 12hr                   0.11        0.12        0.12        0.07        0.12
Rain shwrs     C  L  L  L  L  C  C  C  C  L  L  L  L  C  C  C  C  L  L  L  L  C
Tstms          C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C  C
Heat index    92 93 96 98 96 92 90 90 89 89 94 95 94 91 90 89 86 89 94 95 94 91
Max heat         93    98    98    92    90    95    95    90    89    95    95


Date          Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          80    88      81    89      81    89      80    88
Temp          82 82 86 85   84 83 86 85   84 83 86 85   83 83 86 85
Dewpt         75 75 75 75   75 76 76 76   76 76 77 76   76 77 77 76
PWind dir         S     S       S     S      SE    SE       E    SE
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1 SC B1   B1 B1 B1 B1   B2 B2 B2 B2   B2 B2 B1 B1
PoP 12hr         50    60      70    70      70    80      70    70
Rain shwrs     C  C  L  L    L  L  L  L    L  L  D  D    L  L  L  L
Tstms          C  C  C  C    C  C  L  L    C  C  C  C    C  C  C  C

$$