As of 05:38 CDT

Weather in Jefferson, LA

77°

Jefferson, Sunday, 9 August, 05:38

Clear. Feels like 79°. High 90°, low 76°.

Pressure30.00 inHg

Wind0.9 mph NW

Humidity90%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

Monthly outlook for Jefferson, LA: average high 93.9°, average low 78.7°. That is 3.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 9 days and 2.6 inches. The warmest day looks like 18 August (98°), the coolest 9 August (76.5°).

93.9°/78.7°

Average high / low

+3.3°

Above normal

7 / 9

Wet days / normal

1.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	93.9°	87.8°	+3.4°
19 August – 28 August	93.8°	87.7°	+3.4°
29 August – 7 September	at normal	85.9°	—

August records over 66 years

102.6°27 August 2023All-time high

66.4°14 August 2004All-time low

Climate normals and records are computed from the nearest reference point — Metairie (3 mi).

Mon, 1093° / 80°

0.19

93 °

Jefferson, Monday, 10 August

Rain. High 93°, low 80°.

Pressure30.12 inHg

Wind2.2 mph NW

Humidity56%

Visibility6.2 mi

Dew point73°

Tue, 1191° / 78°

0.04

91 °

Jefferson, Tuesday, 11 August

Light rain. High 91°, low 78°.

Pressure30.09 inHg

Wind4.6 mph NE

Humidity60%

Visibility6.2 mi

Dew point74°

Wed, 1295° / 78°

95 °

Jefferson, Wednesday, 12 August

Clear. High 95°, low 78°.

Pressure30.03 inHg

Wind3.8 mph SW

Humidity49%

Visibility6.2 mi

Dew point70°

Thu, 1395° / 78°

95 °

Jefferson, Thursday, 13 August

Clear. High 95°, low 78°.

Pressure30.03 inHg

Wind10 mph S

Humidity49%

Visibility—

Dew point70°

Fri, 1494° / 77°

94 °

Jefferson, Friday, 14 August

Overcast. High 94°, low 77°.

Pressure30.12 inHg

Wind10 mph S

Humidity47%

Visibility—

Dew point69°

Sat, 1593° / 78°

93 °

Jefferson, Saturday, 15 August

Overcast. High 93°, low 78°.

Pressure30.15 inHg

Wind9.6 mph SW

Humidity49%

Visibility—

Dew point69°

Sun, 1695° / 78°

95 °

Jefferson, Sunday, 16 August

Partly cloudy. High 95°, low 78°.

Pressure30.15 inHg

Wind10.2 mph S

Humidity46%

Visibility—

Dew point67°

Mon, 1796° / 80°

96 °

Jefferson, Monday, 17 August

Clear. High 96°, low 80°.

Pressure30.06 inHg

Wind9.9 mph SW

Humidity47%

Visibility—

Dew point69°

Tue, 1898° / 80°

0.03

98 °

Jefferson, Tuesday, 18 August

Light rain. High 98°, low 80°.

Pressure29.97 inHg

Wind15.3 mph SE

Humidity43%

Visibility—

Dew point69°

Wed, 1997° / 78°

0.44

97 °

Jefferson, Wednesday, 19 August

Rain. High 97°, low 78°.

Pressure30.00 inHg

Wind16 mph E

Humidity54%

Visibility—

Dew point71°

Thu, 2093° / 78°

0.46

93 °

Jefferson, Thursday, 20 August

Rain. High 93°, low 78°.

Pressure29.97 inHg

Wind10 mph S

Humidity60%

Visibility—

Dew point73°

Fri, 2196° / 81°

96 °

Jefferson, Friday, 21 August

Clear. High 96°, low 81°.

Pressure29.94 inHg

Wind11.3 mph S

Humidity51%

Visibility—

Dew point71°

Sat, 2296° / 80°

96 °

Jefferson, Saturday, 22 August

Overcast. High 96°, low 80°.

Pressure29.94 inHg

Wind12.3 mph S

Humidity51%

Visibility—

Dew point71°

Sun, 2391° / 81°

0.15

91 °

Jefferson, Sunday, 23 August

Light rain. High 91°, low 81°.

Pressure29.94 inHg

Wind16.2 mph N

Humidity59%

Visibility—

Dew point73°

Mon, 2490° / 78°

0.14

90 °

Jefferson, Monday, 24 August

Light rain. High 90°, low 78°.

Pressure29.94 inHg

Wind8.3 mph N

Humidity57%

Visibility—

Dew point71°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2587° / 77°

0.18

87 °

Jefferson, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.18 in

Chance of precipitation57%

Record high98° (2023)

Record low71° (1966)

Wed, 2687° / 77°

0.21

87 °

Jefferson, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.21 in

Chance of precipitation55%

Record high101° (2023)

Record low71° (1966)

Thu, 2787° / 77°

0.17

87 °

Jefferson, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.17 in

Chance of precipitation58%

Record high103° (2023)

Record low71° (2009)

Fri, 2887° / 77°

0.25

87 °

Jefferson, Friday, 28 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.25 in

Chance of precipitation60%

Record high97° (1998)

Record low71° (2015)

Sat, 2986° / 77°

0.56

86 °

Jefferson, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high86°

Average low77°

Average precipitation0.56 in

Chance of precipitation60%

Record high98° (2000)

Record low70° (1992)

Sun, 3087° / 77°

0.29

87 °

Jefferson, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.29 in

Chance of precipitation63%

Record high97° (2000)

Record low70° (1992)

Mon, 3187° / 77°

0.13

87 °

Jefferson, Monday, 31 August

Climate normal for this date — 60-year average.

Average high87°

Average low77°

Average precipitation0.13 in

Chance of precipitation53%

Record high94° (2000)

Record low72° (1968)

Tue, 0186° / 77°

0.22

86 °

Jefferson, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high86°

Average low77°

Average precipitation0.22 in

Chance of precipitation60%

Record high96° (2000)

Record low72° (1968)

Wed, 0286° / 76°

0.23

86 °

Jefferson, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high86°

Average low76°

Average precipitation0.23 in

Chance of precipitation55%

Record high99° (2000)

Record low68° (1967)

Thu, 0386° / 76°

0.21

86 °

Jefferson, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high86°

Average low76°

Average precipitation0.21 in

Chance of precipitation60%

Record high94° (2000)

Record low70° (1967)

Fri, 0486° / 76°

0.26

86 °

Jefferson, Friday, 4 September

Climate normal for this date — 60-year average.

Average high86°

Average low76°

Average precipitation0.26 in

Chance of precipitation58%

Record high97° (2000)

Record low69° (1974)

Sat, 0585° / 76°

0.31

85 °

Jefferson, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high85°

Average low76°

Average precipitation0.31 in

Chance of precipitation50%

Record high94° (2000)

Record low69° (1974)

Sun, 0685° / 76°

0.26

85 °

Jefferson, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high85°

Average low76°

Average precipitation0.26 in

Chance of precipitation53%

Record high94° (2019)

Record low66° (2011)

Mon, 0785° / 75°

0.18

85 °

Jefferson, Monday, 7 September

Climate normal for this date — 60-year average.

Average high85°

Average low75°

Average precipitation0.18 in

Chance of precipitation48%

Record high94° (2019)

Record low65° (2011)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Jefferson, LA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Jefferson, LA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.