15-Day Weather Forecast - Jacksonville
15-day weather forecast for Jacksonville: temperatures from 22°C (72°F) to 38°C (100°F). Average daily high 34°C (93°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Jacksonville's 15-day outlook ranges from a low of 22°C to a high of 38°C, with an average daytime high near 34°C. That's 3° above the long-term average high of 31°C for this time of year. It continues a recent pattern — 18 of the last 19 days with published data have run warmer than normal. Air quality is currently Moderate (AQI 55), driven mainly by PM2.5 at 9.6 μg/m³.
Today vs Normal
The long-term average high for today is 31°C.
18 of the last 19 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Extended Outlook for Jacksonville
Over the next 15 days, Jacksonville is forecast to see temperatures ranging from 22°C to 38°C, averaging a daily high of 34°C. The extended outlook indicates significant rainfall totalling 44.8 mm spread across 11 days. High temperatures may pose heat stress - stay hydrated and limit sun exposure during peak afternoon hours.