As of 00:09 CDT

Weather in Sulphur, LA

77°

Sulphur, Sunday, 9 August, 00:09

Overcast. Feels like 79°. High 91°, low 74°.

Pressure30.03 inHg

Wind4 mph S

Humidity93%

Visibility6.2 mi

Dew point75°

See detailed hourly forecast

Monthly outlook for Sulphur, LA: average high 97.3°, average low 76.1°. That is 4.1° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 9 days and 2.4 inches. The warmest day looks like 20 August (101.7°), the coolest 9 August (73.8°).

97.3°/76.1°

Average high / low

+4.1°

Above normal

3 / 9

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	95.5°	89.9°	+3.1°
19 August – 28 August	100.3°	89.6°	+5.9°
29 August – 7 September	at normal	87.9°	—

August records over 66 years

106.7°31 August 2000All-time high

60.8°17 August 1992All-time low

Climate normals and records are computed from the nearest reference point — Lake Charles (9 mi).

Mon, 1088° / 74°

0.35

88 °

Sulphur, Monday, 10 August

Rain. High 88°, low 74°.

Pressure30.09 inHg

Wind4.9 mph S

Humidity70%

Visibility6.2 mi

Dew point76°

Tue, 1196° / 76°

0.12

96 °

Sulphur, Tuesday, 11 August

Rain. High 96°, low 76°.

Pressure30.09 inHg

Wind5.3 mph S

Humidity67%

Visibility5.7 mi

Dew point77°

Wed, 1295° / 77°

95 °

Sulphur, Wednesday, 12 August

Clear. High 95°, low 77°.

Pressure30.00 inHg

Wind8.7 mph SW

Humidity49%

Visibility6.2 mi

Dew point72°

Thu, 1395° / 77°

95 °

Sulphur, Thursday, 13 August

Overcast. High 95°, low 77°.

Pressure29.97 inHg

Wind12.5 mph S

Humidity45%

Visibility—

Dew point68°

Fri, 1496° / 76°

96 °

Sulphur, Friday, 14 August

Partly cloudy. High 96°, low 76°.

Pressure30.06 inHg

Wind11.4 mph S

Humidity44%

Visibility—

Dew point68°

Sat, 1598° / 78°

98 °

Sulphur, Saturday, 15 August

Mostly clear. High 98°, low 78°.

Pressure30.12 inHg

Wind11.3 mph S

Humidity43%

Visibility—

Dew point69°

Sun, 1697° / 74°

97 °

Sulphur, Sunday, 16 August

Clear. High 97°, low 74°.

Pressure30.12 inHg

Wind8.9 mph S

Humidity36%

Visibility—

Dew point63°

Mon, 1799° / 74°

99 °

Sulphur, Monday, 17 August

Partly cloudy. High 99°, low 74°.

Pressure30.09 inHg

Wind9.8 mph S

Humidity39%

Visibility—

Dew point65°

Tue, 1899° / 76°

99 °

Sulphur, Tuesday, 18 August

Clear. High 99°, low 76°.

Pressure30.06 inHg

Wind10.3 mph S

Humidity45%

Visibility—

Dew point69°

Wed, 19100° / 76°

100 °

Sulphur, Wednesday, 19 August

Clear. High 100°, low 76°.

Pressure30.00 inHg

Wind10.8 mph S

Humidity40%

Visibility—

Dew point66°

Thu, 20102° / 75°

102 °

Sulphur, Thursday, 20 August

Clear. High 102°, low 75°.

Pressure29.94 inHg

Wind11.9 mph S

Humidity37%

Visibility—

Dew point65°

Fri, 21100° / 76°

100 °

Sulphur, Friday, 21 August

Clear. High 100°, low 76°.

Pressure29.94 inHg

Wind10.8 mph SW

Humidity39%

Visibility—

Dew point67°

Sat, 22100° / 77°

100 °

Sulphur, Saturday, 22 August

Clear. High 100°, low 77°.

Pressure29.97 inHg

Wind11.4 mph S

Humidity32%

Visibility—

Dew point62°

Sun, 23100° / 78°

100 °

Sulphur, Sunday, 23 August

Clear. High 100°, low 78°.

Pressure30.03 inHg

Wind11.1 mph S

Humidity36%

Visibility—

Dew point65°

Mon, 24100° / 77°

100 °

Sulphur, Monday, 24 August

Mostly clear. High 100°, low 77°.

Pressure30.03 inHg

Wind5.9 mph S

Humidity39%

Visibility—

Dew point67°

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

Tue, 2590° / 75°

0.12

90 °

Sulphur, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high90°

Average low75°

Average precipitation0.12 in

Chance of precipitation52%

Record high101° (2023)

Record low67° (1997)

Wed, 2689° / 75°

0.1

89 °

Sulphur, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high89°

Average low75°

Average precipitation0.1 in

Chance of precipitation50%

Record high100° (2023)

Record low64° (1966)

Thu, 2789° / 75°

0.25

89 °

Sulphur, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high89°

Average low75°

Average precipitation0.25 in

Chance of precipitation62%

Record high106° (2023)

Record low68° (2015)

Fri, 2888° / 74°

0.21

88 °

Sulphur, Friday, 28 August

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.21 in

Chance of precipitation65%

Record high103° (2011)

Record low64° (2015)

Sat, 2988° / 74°

0.2

88 °

Sulphur, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.2 in

Chance of precipitation55%

Record high102° (2011)

Record low63° (1992)

Sun, 3088° / 74°

0.22

88 °

Sulphur, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.22 in

Chance of precipitation60%

Record high103° (2000)

Record low64° (1992)

Mon, 3189° / 74°

0.15

89 °

Sulphur, Monday, 31 August

Climate normal for this date — 60-year average.

Average high89°

Average low74°

Average precipitation0.15 in

Chance of precipitation55%

Record high107° (2000)

Record low65° (1968)

Tue, 0188° / 74°

0.17

88 °

Sulphur, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.17 in

Chance of precipitation58%

Record high103° (2000)

Record low67° (2004)

Wed, 0289° / 74°

0.18

89 °

Sulphur, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high89°

Average low74°

Average precipitation0.18 in

Chance of precipitation58%

Record high103° (2000)

Record low63° (1967)

Thu, 0388° / 74°

0.26

88 °

Sulphur, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.26 in

Chance of precipitation62%

Record high103° (2000)

Record low62° (1987)

Fri, 0488° / 74°

0.2

88 °

Sulphur, Friday, 4 September

Climate normal for this date — 60-year average.

Average high88°

Average low74°

Average precipitation0.2 in

Chance of precipitation55%

Record high105° (2000)

Record low63° (1974)

Sat, 0587° / 74°

0.17

87 °

Sulphur, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high87°

Average low74°

Average precipitation0.17 in

Chance of precipitation48%

Record high104° (2000)

Record low58° (1974)

Sun, 0687° / 73°

0.15

87 °

Sulphur, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high87°

Average low73°

Average precipitation0.15 in

Chance of precipitation48%

Record high94° (2019)

Record low59° (2011)

Mon, 0787° / 73°

0.11

87 °

Sulphur, Monday, 7 September

Climate normal for this date — 60-year average.

Average high87°

Average low73°

Average precipitation0.11 in

Chance of precipitation47%

Record high97° (2023)

Record low57° (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 Sulphur, 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 Sulphur, 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.