Weather in Jacksonville - 14-day forecast

Detailed weather forecast for Jacksonville, United States of America: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Jacksonville

today🌧️ 33°💧 0.2 mm

Sun🌧️ 33°💧 1.5 mm

Mon🌧️ 32°💧 16 mm

Tue🌧️ 34°💧 1 mm

Wed🌧️ 34°💧 0.2 mm

Thu🌤️ 35°💧 0.5 mm

Fri🌧️ 39°💧 0.2 mm

Sat🌧️ 32°💧 3.5 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Friday 11 Sept in Jacksonville, the forecast high is 39°C. Typical daytime temperatures at this time of year range from 29°C to 33°C, so it will be exceptionally warm. It is warmer than 99% of similar days.

Saturday 5 Sept

33°Cwarmer than usual

usually 29°C–33°C

warmer than 77% of similar days

night: exceptionally warm rain: less rain than usual wind: typical

Sunday 6 Sept

33°Cwarmer than usual

usually 29°C–33°C

warmer than 79% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Monday 7 Sept

32°Cnear normal

usually 29°C–33°C

night: exceptionally warm rain: exceptionally wet wind: stronger than usual

Tuesday 8 Sept

34°Cwarmer than usual

usually 29°C–33°C

warmer than 88% of similar days

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Wednesday 9 Sept

34°Cwarmer than usual

usually 29°C–33°C

warmer than 86% of similar days

night: exceptionally warm rain: less rain than usual wind: exceptionally strong

Thursday 10 Sept

35°Cexceptionally warm

usually 29°C–33°C

warmer than 95% of similar days

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Friday 11 Sept

39°Cexceptionally warm

usually 29°C–33°C

warmer than 99% of similar days

night: exceptionally warm rain: less rain than usual wind: exceptionally strong

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 31°C by day. The coolest year was 1984 (28°C) and the warmest was 2019 (36°C). The current forecast averages 34°C - higher than in 93% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Jacksonville

Jacksonville - 14-day weather forecast infographic

Jacksonville 30 & 45-day weather - long-range outlook

Next 15 days · forecast

32°

around 27° at night · days with rain: 10

Weeks 3-4 · avg for September

31°

around 24° at night · rain chance 51%

Weeks 5-7 · avg for October

28°

around 20° at night · rain chance 31%

The 30 & 45-day outlook for Jacksonville: the next 15 days are a numerical forecast updated daily - on average 32° by day and 27° at night. Further out we rely on multi-year climate averages: around 31° in September, and about 28° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Jacksonville

Saturday5 September 2026

🌧️33°light rain

sunrise 07:05 · sunset 19:45 · night 28° · evening 29° · rain 0.15 mm · humidity 40% · wind 3 m/s · clouds 69%

Sunday6 September 2026

🌧️33°light rain

sunrise 07:06 · sunset 19:44 · night 29° · evening 31° · rain 1.5 mm · humidity 43% · wind 4 m/s · clouds 17%

Monday7 September 2026

🌧️32°moderate rain

sunrise 07:06 · sunset 19:42 · night 26° · evening 27° · rain 16.02 mm · humidity 57% · wind 4 m/s · clouds 90%

Tuesday8 September 2026

🌧️34°light rain

sunrise 07:07 · sunset 19:41 · night 28° · evening 29° · rain 1.01 mm · humidity 44% · wind 4 m/s · clouds 83%

Wednesday9 September 2026

🌧️34°light rain

sunrise 07:08 · sunset 19:40 · night 28° · evening 29° · rain 0.17 mm · humidity 46% · wind 5 m/s · clouds 49%

Thursday10 September 2026

🌤️35°a few clouds

sunrise 07:08 · sunset 19:39 · night 27° · evening 29° · rain 0.45 mm · humidity 38% · wind 4 m/s · clouds 20%

Friday11 September 2026

🌧️39°light rain

sunrise 07:09 · sunset 19:37 · night 29° · evening 31° · rain 0.18 mm · humidity 26% · wind 5 m/s · clouds 5%

Saturday12 September 2026

🌧️32°light rain

sunrise 07:09 · sunset 19:36 · night 26° · evening 26° · rain 3.45 mm · humidity 56% · wind 5 m/s · clouds 95%

Sunday13 September 2026

🌧️28°moderate rain

sunrise 07:10 · sunset 19:35 · night 25° · evening 26° · rain 20.04 mm · humidity 70% · wind 6 m/s · clouds 73%

Monday14 September 2026

🌧️29°light rain

sunrise 07:10 · sunset 19:34 · night 25° · evening 26° · rain 8.37 mm · humidity 70% · wind 5 m/s · clouds 39%

Tuesday15 September 2026

🌧️29°light rain

sunrise 07:11 · sunset 19:32 · night 26° · evening 27° · rain 5.01 mm · humidity 60% · wind 4 m/s · clouds 34%

Wednesday16 September 2026

☀️32°clear sky

sunrise 07:11 · sunset 19:31 · night 27° · evening 27° · rain 15.54 mm · humidity 43% · wind 5 m/s · clouds 9%

Thursday17 September 2026

🌧️33°light rain

sunrise 07:12 · sunset 19:30 · night 27° · evening 28° · rain 1.11 mm · humidity 41% · wind 5 m/s · clouds 5%

Friday18 September 2026

🌧️33°light rain

sunrise 07:13 · sunset 19:29 · night 26° · evening 28° · rain 1.14 mm · humidity 41% · wind 5 m/s · clouds 4%

Saturday19 September 2026

☀️33°clear sky

sunrise 07:13 · sunset 19:27 · night 26° · evening 27° · humidity 43% · wind 5 m/s

UV index in Jacksonville - is it safe to sunbathe?

Today the UV index in Jacksonville is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Jacksonville weather through the year

Warmest, driest months on average: January, February, March, April.

Upcoming public holidays in United States of America: Labour Day — 7 September · Veterans Day — 11 November · Thanksgiving Day — 26 November.

Nearby and related places

NassauLos AngelesHoustonNashvilleDallasNew YorkWashington

FAQ - Jacksonville weather

What is the weather like in Jacksonville today?

Today it is about 33° during the day and 28° at night, light rain.

How far ahead can I check the forecast for Jacksonville?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.