Port St. John Weather Forecast 15 Days, Weather in Port St. John Today
Current weather conditions and 15 day weather forecast for Port St. John, Florida, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Port St. John
| 06 August 2026 Thursday 24.3 ° C / 75.7°F  Patchy rain nearby |
Feels Like : 27.5 ° C / 81.5°F Humidity : % 94 Pressure : 1019 mb Wind Speed : 11.5 kmph / 7.2 miles from ESE  Visibility : 10 km Precipitation (rainfall) : 1.82 mm Cloud (%) : 87 |
15 day weather forecast for Port St. John, FL, USA
Weather Forecast for next 15 Days for Port St. John including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Port St. John, Florida state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 August 2026 Thursday |  Sunny |
23.5 ° C (74.3°F) |
31.8 ° C (89.2°F) |
26.5 ° C (79.6°F) |
% 88 | 81% | 10.7 | Sunrise:06:47 AM Sunset: 08:10 PM |
Moonrise:12:10 AM Moonset: 02:17 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday | Patchy rain nearby |
23.3 ° C (73.9°F) |
31 ° C (87.8°F) |
27.3 ° C (81.1°F) |
% 80 | 76% | 10.3 | Sunrise:06:48 AM Sunset: 08:09 PM |
Moonrise:12:52 AM Moonset: 03:23 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday |  Thundery outbreaks in nearby |
25.5 ° C (77.8°F) |
32.7 ° C (90.8°F) |
28.4 ° C (83.1°F) |
% 77 | 73% | 9.8 | Sunrise:06:48 AM Sunset: 08:08 PM |
Moonrise:01:43 AM Moonset: 04:29 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
24.8 ° C (76.6°F) |
33.5 ° C (92.3°F) |
28.4 ° C (83.1°F) |
% 77 | 57% | 11.3 | Sunrise:06:49 AM Sunset: 08:07 PM |
Moonrise:02:42 AM Moonset: 05:33 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
24.8 ° C (76.6°F) |
34 ° C (93.2°F) |
28.7 ° C (83.7°F) |
% 74 | 11% | 10.9 | Sunrise:06:50 AM Sunset: 08:07 PM |
Moonrise:03:50 AM Moonset: 06:31 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
24.6 ° C (76.2°F) |
35.4 ° C (95.7°F) |
29 ° C (84.2°F) |
% 72 | 57% | 9 | Sunrise:06:50 AM Sunset: 08:06 PM |
Moonrise:05:03 AM Moonset: 07:21 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
25.2 ° C (77.3°F) |
36.9 ° C (98.5°F) |
29.7 ° C (85.5°F) |
% 67 | 9% | 9 | Sunrise:06:51 AM Sunset: 08:05 PM |
Moonrise:06:17 AM Moonset: 08:04 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
26.2 ° C (79.1°F) |
37 ° C (98.7°F) |
30.1 ° C (86.1°F) |
% 63 | 5% | 9 | Sunrise:06:51 AM Sunset: 08:04 PM |
Moonrise:07:29 AM Moonset: 08:42 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Sunny |
25.6 ° C (78°F) |
36 ° C (96.8°F) |
29.4 ° C (85°F) |
% 66 | 5% | 9 | Sunrise:06:52 AM Sunset: 08:03 PM |
Moonrise:08:38 AM Moonset: 09:17 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
24.8 ° C (76.7°F) |
34.6 ° C (94.3°F) |
28.8 ° C (83.9°F) |
% 68 | 6% | 8 | Sunrise:06:52 AM Sunset: 08:02 PM |
Moonrise:09:44 AM Moonset: 09:50 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Patchy rain nearby |
24.5 ° C (76.1°F) |
34.2 ° C (93.5°F) |
27.9 ° C (82.2°F) |
% 74 | 41% | 8 | Sunrise:06:53 AM Sunset: 08:01 PM |
Moonrise:10:48 AM Moonset: 10:24 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Patchy rain nearby |
22.9 ° C (73.3°F) |
31.8 ° C (89.3°F) |
27.1 ° C (80.8°F) |
% 73 | 63% | 7 | Sunrise:06:53 AM Sunset: 08:00 PM |
Moonrise:11:51 AM Moonset: 10:59 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday |  Partly Cloudy |
22.3 ° C (72.2°F) |
34.1 ° C (93.3°F) |
27.6 ° C (81.6°F) |
% 68 | 39% | 8 | Sunrise:06:54 AM Sunset: 07:59 PM |
Moonrise:12:54 PM Moonset: 11:37 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Partly Cloudy |
24.7 ° C (76.5°F) |
35.2 ° C (95.3°F) |
28.8 ° C (83.8°F) |
% 64 | 36% | 9 | Sunrise:06:54 AM Sunset: 07:58 PM |
Moonrise:01:56 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
Add a link to your web page; copy and paste this html to your web page