Climate averages 1991–2020

Jackson weather
in January.

A cool, wet month: the coolest and one of the wettest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 13.2°C Daytime mean, January

Average low 3.6°C Night-time mean, January

Rainfall 121 mm 10 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

January is a cool month in Jackson: daytime highs average 13.2°C and nights cool to about 3.6°C. By daytime temperature it is the coolest month of the year.

Expect about 121 mm of rain on roughly 10 days, which makes January a wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 10 h 17 min on an average January day.

The nearest other city in this atlas is Baton Rouge (227 km away). In January its highs average 15.9°C, 2.7°C warmer than Jackson, with 124 mm of rain.

Among the 498 cities listed in the United States, Jackson ranks joint 202nd of 498 for the warmest January highs and 462nd of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Jackson is 3.7°C warmer than that mean.

From January to February, average highs rise by 2.4°C to 15.6°C, and monthly rainfall falls from 121 mm to 120 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Jackson climate table

1991–2020

Monthly climate averages for Jackson, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	13.2°C3.6°C	3.6°C	121	9.7	10.310 h
February	15.6°C5.2°C	5.2°C	120	9.8	11.011 h
March	19.5°C8.8°C	8.8°C	121	10.4	12.012 h
April	23.7°C12.7°C	12.7°C	114	8.6	13.013 h
May	28.1°C17.3°C	17.3°C	104	9.7	13.814 h
June	31.4°C21.3°C	21.3°C	87	11.4	14.214 h
July	32.5°C23.0°C	23.0°C	102	13.8	14.014 h
August	32.6°C22.7°C	22.7°C	95	11.5	13.313 h
September	30.4°C19.9°C	19.9°C	83	7.3	12.412 h
October	25.1°C14.0°C	14.0°C	91	7.4	11.411 h
November	18.6°C8.1°C	8.1°C	92	7.8	10.511 h
December	14.4°C4.8°C	4.8°C	119	9.4	10.110 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Jackson

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jackson) is explained once on the Jackson year overview and on the Sources, method and limits page.