Monthly climate guide
Jacksonville weather in January
January in Jacksonville is typically mild, with average daytime highs around 18°C (64°F) and night-time lows near 6°C (43°F). The month usually brings about 79 mm of rain (some rain) and is often cloudy. Daytime highs are 3°C cooler than December and 3°C cooler than February.
What stands out in January
- In Jacksonville, January is mid-winter.
- Just 140 km apart, but Jacksonville runs about 3°C cooler than Daytona Beach this month.
- Expect more cloud than at any other time of year.
- Evenings cool off sharply: the daily range is around 12°C, so pack a layer.
January is typically Jacksonville's coolest month.
Avg high
18°C
64°F
Avg low
6°C
43°F
Rainfall
79 mm
some rain
Humidity
80%
relative
Sky
66%
cloud · often cloudy
Jacksonville weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 18°C / 64°F | 6°C / 43°F | 79 mm | 80% | 66% |
| February | 21°C / 70°F | 9°C / 48°F | 78 mm | 81% | 62% |
| March | 24°C / 75°F | 11°C / 52°F | 67 mm | 75% | 52% |
| April | 28°C / 82°F | 15°C / 59°F | 90 mm | 73% | 48% |
| May | 31°C / 88°F | 19°C / 66°F | 106 mm | 69% | 45% |
| June | 32°C / 90°F | 22°C / 72°F | 194 mm | 76% | 58% |
| July | 33°C / 92°F | 23°C / 74°F | 155 mm | 78% | 55% |
| August | 33°C / 91°F | 24°C / 74°F | 173 mm | 81% | 59% |
| September | 31°C / 87°F | 22°C / 71°F | 148 mm | 82% | 60% |
| October | 27°C / 81°F | 17°C / 63°F | 83 mm | 80% | 51% |
| November | 23°C / 73°F | 12°C / 53°F | 65 mm | 80% | 60% |
| December | 21°C / 69°F | 9°C / 49°F | 81 mm | 84% | 67% |
What to pack for January
- A warm sweater or fleece for layering
- A mid-weight jacket
- An extra layer — evenings are noticeably cooler than afternoons
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is January a good time to visit Jacksonville?
Compare the months in the chart above to find your ideal window.
Best time to visit Jacksonville →Other United States cities in January
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Jacksonville weather in January. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/jacksonville/january
<a href="https://weathercompare.eu/weather/usa/jacksonville/january">Jacksonville weather in January</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/jacksonville" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Jacksonville weather in January"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/jacksonville/january">Jacksonville weather in January</a> – WeatherCompare</p>
Jacksonville in January: quick answers
Is January a good time to visit Jacksonville?
January is a reasonable time for Jacksonville: highs around 18°C and about 79 mm of rain, though not one of the three best months.
How warm is Jacksonville in January?
Average highs are about 18°C (64°F) and average lows about 6°C (43°F), based on 10 years of daily data.
Does it rain a lot in Jacksonville in January?
Jacksonville typically gets around 79 mm of rain in January — some rain.
Figures are long-term averages for the area around Jacksonville (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.