Now

82°

0.04 in

5 mph

01:00

81°

0.04 in

5 mph

02:00

81°

0.04 in

4 mph

03:00

80°

0.04 in

4 mph

04:00

80°

0.04 in

4 mph

05:00

79°

0.04 in

4 mph

06:00

75°

16%

4 mph

07:00

75°

21%

4 mph

08:00

79°

21%

5 mph

09:00

83°

16%

7 mph

10:00

87°

12%

7 mph

11:00

91°

7 mph

12:00

94°

10%

7 mph

13:00

96°

6 mph

14:00

97°

6 mph

15:00

97°

6 mph

16:00

96°

7 mph

17:00

95°

10%

8 mph

18:00

90°

12%

11 mph

19:00

85°

16%

10 mph

20:00

82°

19%

10 mph

21:00

81°

19%

8 mph

22:00

80°

7 mph

23:00

79°

6 mph

10-day forecast

Updated 12:59 AM

Thu · Today · 20 Aug Mostly cloudy

97° 75° 0.24 in

Fri · Tomorrow · 21 Aug Sunny

100° 75° 0.02 in

Saturday · 22 Aug Mostly cloudy

102° 75° 0.01 in

Sunday · 23 Aug Sunny

103° 76° 0.03 in

Monday · 24 Aug Mostly cloudy

97° 76° 17%

Tuesday · 25 Aug Sunny

97° 77° 12%

Wednesday · 26 Aug Sunny

100° 77° 6%

Thursday · 27 Aug Sunny

96° 77° 0.11 in

Friday · 28 Aug Sunny

94° 70° 1%

Saturday · 29 Aug Sunny

97° 70° 1%

Details & indices

Wind

5 mph SW

Gusts 17 mph

Humidity

77%

Dew point 73°

Pressure

29.97 inHg

Rising

UV index

10 — Very high

High today

Air Quality

Good

AQI 27 · US EPA

Allergy

None detected

—

Visibility

6 mi

Clear view

Allergy — Old Jefferson

🌿 Conditions right now

View all →

Birch

None

Grass

None

Oak

None

Alder

None

Hazel

None

Mugwort

None

Ragweed

None

Sun & moon

Sunrise6:33 AM

Sunset7:40 PM

Length of day13h 7m

Moonrise2:25 PM

Moonset—

Moon phase🌓 First Quarter · 51%

Next full moonAug 27 Sturgeon Moon

Latitude30.3827°N

Longitude-91.0170°E

Water temps nearby

View all →

No beaches within 50 miles

🌤️No rain expected in the next 90 minutes

Now+30+60+90 min

Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast

Laundry day

Poor

Line-drying weather

Grilling

Fair

Fire up the grill

Running

Poor

Lace up outside

Patio

Fair

Dinner outdoors

Nearby places in {{REGION}}

82°

79°

89°

Data sources · Thursday, August 20

Where the Old Jefferson forecast comes from

This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 30.3827°N, -91.0170°.

NBM + global weather models

Updated: 12:59 AM

Weather in Old Jefferson

Old Jefferson's outlook: warmest day near 103° (Sunday), coldest night about 70° (Friday). Models drop roughly 0.41 in of precipitation across the stretch — watch Thursday (71%). Wind is the one to watch: gusts to 27 mph around Thursday. Heads up: 3 NWS alerts are active right now, including a Heat Advisory — details on the alerts tab. Right now Old Jefferson is about 18° cooler than nearby Jackson. Longer view: humid-subtropical — long summers, mild winters, spring storm season.

Old Jefferson, LA · Elev 30 ft · 30.38°N, 91.02°W · Louisiana · Forecast computed for these exact coordinates

Old Jefferson, LA Weather

Weather map — Old Jefferson

Today · Thu 8/20

Overnight · Thu 8/20

Tomorrow · Fri 8/21

7-day trend

10-day forecast

Details & indices

🌿 Conditions right now

Sun & moon

Water temps nearby

Daily planner