FNUS72 KJAX 090525 FWSJAX Spot Forecast for Mailbox...USFS National Weather Service Jacksonville FL 125 AM EDT Thu Jul 9 2026 Forecast is based on forecast start time of 0700 EDT on July 09. If conditions become unrepresentative, contact the National Weather Service. Please contact our office at (904) 741-4370 if you have questions or concerns with this forecast. ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... ...HIGH DAYTIME DISPERSION TODAY... .DISCUSSION... A west to southwest flow will continue today with a low chance for a shower or thunderstorm. Given the breezier transport wind and fairly high mixing height, daytime dispersion indices will reach above 75 today. Very hot again today with max temperatures in the upper 90s with a heat advisory in place. Similar weather pattern expected on Friday with slightly higher chance for showers or a storm around 20 percent. Minimum RH values of about 37 to 42 percent are expected today and Friday. .TODAY... TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........20 18 19 20 23 23 25 24 27 32 33 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 10 10 10 10 Chc of thdr (%).0 0 0 0 0 0 0 0 0 10 10 Temp............75 78 83 87 90 92 94 95 97 99 98 RH..............94 91 82 70 62 56 51 48 45 40 42 Heat index (F)..75 78 92 98 101 102 103 104 106 108 106 Wind chill (F)..75 78 92 98 101 102 103 104 106 108 106 20 FT wind dir..SW W W W W SW SW W W W W 20 FT wind spd..1 1 3 3 5 6 6 7 7 7 7 20 FT wind gust.7 7 8 9 12 13 14 15 15 15 16 Mix hgt (kft)...0.6 0.7 1.7 2.8 3.8 4.5 5.1 5.7 6.0 6.2 6.5 Transp wind dir.W W W W W W W W W W W Transp wind spd.7 8 8 9 9 10 10 12 12 12 12 Dispersion idx..3 8 19 33 46 57 67 77 80 81 84 LVORI...........6 5 3 3 1 1 1 1 1 1 1 .TONIGHT... TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........32 26 35 39 37 37 30 23 23 22 21 24 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).10 0 10 0 0 0 0 0 0 0 0 0 Chc of thdr (%).10 0 10 0 0 0 0 0 0 0 0 0 Temp............97 95 91 87 84 82 81 79 78 77 76 76 RH..............43 46 52 59 65 69 74 79 82 87 90 90 Heat index (F)..105 103 98 93 89 86 85 79 78 77 76 76 Wind chill (F)..105 103 98 93 89 86 85 79 78 77 76 76 20 FT wind dir..W W SW SW W SW SW W W SW SW W 20 FT wind spd..7 6 5 5 3 3 2 2 2 2 1 1 20 FT wind gust.15 16 14 15 13 12 10 9 9 7 8 7 Mix hgt (kft)...4.6 2.8 0.9 0.8 0.6 0.5 0.5 0.4 0.4 0.4 0.4 0.4 Transp wind dir.W SW SW W W W W W W W W W Transp wind spd.12 12 12 12 10 10 9 8 7 7 7 7 Dispersion idx..64 41 5 6 5 5 4 4 3 3 3 3 LVORI...........1 1 2 3 3 3 3 4 5 6 6 6 .FRIDAY... TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........28 28 18 24 31 24 30 40 31 30 31 38 Weather cov..... SCH SCH SCH Weather type.... RW RW RW Tstm cov........ SCH SCH SCH Chc of pcpn (%).0 0 0 0 0 0 0 0 10 20 20 20 Chc of thdr(%).0 0 0 0 0 0 0 0 10 20 20 20 Temp............75 75 77 81 87 91 93 96 97 98 99 98 RH..............94 94 94 85 68 58 52 46 43 41 39 41 Heat index (F)..75 75 77 87 96 101 102 105 105 105 107 105 Wind chill (F)..75 75 77 87 96 101 102 105 105 105 107 105 20 FT wind dir..W SW NW NW W W W W SW SW SW SW 20 FT wind spd..1 1 1 1 2 5 6 6 6 6 6 6 20 FT wind gust.6 5 3 5 5 9 12 13 14 14 15 13 Mix hgt (kft)...0.5 0.6 0.6 1.7 2.7 3.8 4.6 5.3 6.1 6.0 5.9 5.8 Transp wind dir.W W W W W W W W W W W W Transp wind spd.7 7 7 7 8 8 9 9 9 9 9 9 Dispersion idx..3 3 7 16 28 39 52 60 68 69 67 65 LVORI...........6 6 6 4 3 1 1 1 1 1 1 1 $$ Forecaster...Shashy Requested by...Michels Type of request...WILDFIRE .TAG 2616912.2/JAX .DELDT 07/09/26 .FormatterVersion 2.0.0 .EMAIL nick.michels@usda.gov