Monthly outlook for Gretna, LA: average high 77.6°, average low 63.5°. That is 3.2° above the climate normal for October. Precipitation is expected on 6 days (about 0.5 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 9 November (82.8°), the coolest 6 November (53.7°).
77.6°/63.5°
Average high / low
+3.2°
Above normal
6 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
77.2°
72.7°
+2.5°
8 November – 17 November
78.3°
69.8°
+4.8°
18 November – 27 November
at normal
68.4°
—
October records over 66 years
92.8°4 October 2019All-time high
41°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Terrytown (2 mi).
Fri, 3079° / 63°0.03
79 °
Gretna, Friday, 30 October
Light rain. High 79°, low 63°.
Pressure30.12 inHg
Wind8.7 mph E
Humidity66%
Visibility6.2 mi
Dew point65°
Sat, 3181° / 70°0.11
81 °
Gretna, Saturday, 31 October
Rain. High 81°, low 70°.
Pressure30.12 inHg
Wind8.6 mph E
Humidity69%
Visibility6.2 mi
Dew point68°
Sun, 0177° / 70°0.04
77 °
Gretna, Sunday, 1 November
Light rain. High 77°, low 70°.
Pressure30.15 inHg
Wind5.8 mph E
Humidity73%
Visibility6.2 mi
Dew point70°
Mon, 0277° / 70°0.06
77 °
Gretna, Monday, 2 November
Light rain. High 77°, low 70°.
Pressure30.06 inHg
Wind10.1 mph E
Humidity73%
Visibility—
Dew point67°
Tue, 0381° / 72°0.06
81 °
Gretna, Tuesday, 3 November
Light rain. High 81°, low 72°.
Pressure29.91 inHg
Wind13.9 mph SE
Humidity64%
Visibility—
Dew point66°
Wed, 0480° / 68°0.1
80 °
Gretna, Wednesday, 4 November
Light rain. High 80°, low 68°.
Pressure29.83 inHg
Wind10.9 mph NW
Humidity47%
Visibility—
Dew point57°
Thu, 0573° / 62°0
73 °
Gretna, Thursday, 5 November
Clear. High 73°, low 62°.
Pressure30.00 inHg
Wind13 mph NW
Humidity41%
Visibility—
Dew point45°
Fri, 0670° / 54°0
70 °
Gretna, Friday, 6 November
Clear. High 70°, low 54°.
Pressure30.06 inHg
Wind8.1 mph NE
Humidity26%
Visibility—
Dew point31°
Sat, 0776° / 57°0
76 °
Gretna, Saturday, 7 November
Clear. High 76°, low 57°.
Pressure30.09 inHg
Wind9 mph E
Humidity32%
Visibility—
Dew point41°
Sun, 0880° / 60°0
80 °
Gretna, Sunday, 8 November
Mostly clear. High 80°, low 60°.
Pressure30.06 inHg
Wind10.6 mph S
Humidity39%
Visibility—
Dew point50°
Mon, 0983° / 68°0.06
83 °
Gretna, Monday, 9 November
Light rain. High 83°, low 68°.
Pressure30.03 inHg
Wind10.9 mph SW
Humidity45%
Visibility—
Dew point58°
Tue, 1076° / 62°0
76 °
Gretna, Tuesday, 10 November
Partly cloudy. High 76°, low 62°.
Pressure30.12 inHg
Wind7.9 mph NW
Humidity35%
Visibility—
Dew point44°
Wed, 1177° / 59°0
77 °
Gretna, Wednesday, 11 November
Overcast. High 77°, low 59°.
Pressure30.12 inHg
Wind7.8 mph N
Humidity35%
Visibility—
Dew point44°
Thu, 1276° / 60°0
76 °
Gretna, Thursday, 12 November
Clear. High 76°, low 60°.
Pressure30.09 inHg
Wind7.5 mph NW
Humidity38%
Visibility—
Dew point46°
Fri, 1379° / 62°0
79 °
Gretna, Friday, 13 November
Clear. High 79°, low 62°.
Pressure30.09 inHg
Wind6.5 mph NW
Humidity36%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1469° / 56°0.07
69 °
Gretna, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high69°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high80° (1993)
Record low37° (2014)
Sun, 1569° / 57°0.11
69 °
Gretna, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0.11 in
Chance of precipitation22%
Record high81° (2005)
Record low39° (1969)
Mon, 1669° / 57°0.08
69 °
Gretna, Monday, 16 November
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0.08 in
Chance of precipitation20%
Record high82° (2011)
Record low40° (2018)
Tue, 1769° / 57°0.07
69 °
Gretna, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0.07 in
Chance of precipitation18%
Record high79° (2013)
Record low40° (1970)
Wed, 1869° / 57°0.14
69 °
Gretna, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0.14 in
Chance of precipitation30%
Record high83° (2024)
Record low38° (2014)
Thu, 1969° / 57°0.14
69 °
Gretna, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high69°
Average low57°
Average precipitation0.14 in
Chance of precipitation28%
Record high82° (2025)
Record low39° (2014)
Fri, 2068° / 56°0.13
68 °
Gretna, Friday, 20 November
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.13 in
Chance of precipitation28%
Record high80° (2025)
Record low43° (2006)
Sat, 2167° / 56°0.11
67 °
Gretna, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high67°
Average low56°
Average precipitation0.11 in
Chance of precipitation28%
Record high82° (2025)
Record low42° (2022)
Sun, 2268° / 56°0.06
68 °
Gretna, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.06 in
Chance of precipitation20%
Record high81° (2025)
Record low40° (1964)
Mon, 2368° / 56°0.11
68 °
Gretna, Monday, 23 November
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.11 in
Chance of precipitation27%
Record high79° (1978)
Record low41° (1975)
Tue, 2467° / 55°0.13
67 °
Gretna, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high67°
Average low55°
Average precipitation0.13 in
Chance of precipitation28%
Record high78° (2025)
Record low32° (1970)
Wed, 2568° / 55°0.12
68 °
Gretna, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.12 in
Chance of precipitation27%
Record high82° (2025)
Record low37° (1970)
Thu, 2669° / 56°0.15
69 °
Gretna, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high69°
Average low56°
Average precipitation0.15 in
Chance of precipitation32%
Record high81° (1973)
Record low44° (1991)
Fri, 2768° / 56°0.16
68 °
Gretna, Friday, 27 November
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.16 in
Chance of precipitation38%
Record high80° (1994)
Record low41° (1975)
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 Gretna, 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 Gretna, 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.