United States · 1991–2020

Best time to visit
Alliance.

April leads for comfortable weather in Alliance: typically 25.1°C by day, 14.7°C at night, with 118 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high25.1°C

Typical low14.7°C

Rain in April118 mm

Comfort

April

April · October · November

82climate match

Beach

May

May · September · October

75climate match

Outdoors

November

November · February · March

80climate match

The weakest month is July, scoring 28 against April’s 82 — days average 32.3°C, 8° above the 24°C the score treats as ideal, and 184 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

4016.5° / 6.5°

Feb

5618.5° / 8.1°

Mar

7221.8° / 11.4°

Apr

8225.1° / 14.7°

May

6029.1° / 19.2°

Jun

3531.5° / 22.2°

Jul

2832.3° / 23.1°

Aug

3232.3° / 23.1°

Sep

4530.5° / 21.5°

Oct

7826.6° / 16.3°

Nov

7321.6° / 10.7°

Dec

5118° / 7.7°

Monthly climate evidence for Alliance — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	16.5°C	6.5°C	141 mm	8.3	10 h 26	40	Good coverage
February	18.5°C	8.1°C	106 mm	7.3	11 h 06	56	Good coverage
March	21.8°C	11.4°C	118 mm	6.5	11 h 54	72	Good coverage
April	25.1°C	14.7°C	118 mm	5.5	12 h 51	82	Good coverage
May	29.1°C	19.2°C	125 mm	6.5	13 h 37	60	Good coverage
June	31.5°C	22.2°C	180 mm	11.2	14 h 02	35	Good coverage
July	32.3°C	23.1°C	184 mm	13.6	13 h 53	28	Good coverage
August	32.3°C	23.1°C	163 mm	11.9	13 h 13	32	Good coverage
September	30.5°C	21.5°C	158 mm	7.8	12 h 18	45	Good coverage
October	26.6°C	16.3°C	95 mm	6.1	11 h 24	78	Good coverage
November	21.6°C	10.7°C	95 mm	6.1	10 h 37	73	Good coverage
December	18°C	7.7°C	122 mm	7.2	10 h 15	51	Good coverage

Records at NEW ORLEANS ALVIN CALLENDER FL, 1956–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.9°C31 Jan 2002	-10.0°C11 Jan 1982	154 mm25 Jan 1974	450 mm1991 · driest 0 mm in 2001	54
February	28.9°C26 Feb 1972	-8.3°C5 Feb 1996	181 mm10 Feb 1981	368 mm1979 · driest 9 mm in 1989	54
March	30.6°C31 Mar 1978	-5.0°C3 Mar 1980	104 mm26 Mar 1974	272 mm1995 · driest 1 mm in 2009	55
April	33.3°C30 Apr 1981	-0.6°C4 Apr 1987	202 mm7 Apr 1983	580 mm1980 · driest 6 mm in 2011	53
May	36.1°C30 May 1977	8.3°C1 May 1996	163 mm4 May 2007	334 mm1978 · driest 0 mm in 2009	54
June	37.8°C24 Jun 2009	10.6°C1 Jun 1984	137 mm30 Jun 2003	520 mm2003 · driest 9 mm in 1960	52
July	38.9°C23 Jul 1981	16.7°C16 Jul 1967	93 mm6 Jul 1958	334 mm1994 · driest 62 mm in 1968	53
August	39.4°C22 Aug 1980	15.0°C23 Aug 1956	120 mm15 Aug 1985	383 mm1977 · driest 21 mm in 1957	52
September	39.4°C10 Sep 1980	7.8°C30 Sep 1967	276 mm24 Sep 1956	570 mm1998 · driest 0 mm in 2009	52
October	34.4°C1 Oct 1998	1.1°C20 Oct 1989	193 mm22 Oct 2007	287 mm1980 · driest 0 mm in 1978	53
November	31.1°C2 Nov 1972	-3.3°C24 Nov 1970	214 mm7 Nov 1989	564 mm1989 · driest 7 mm in 1960	52
December	29.4°C16 Dec 1971	-10.6°C23 Dec 1989	208 mm21 Dec 2006	418 mm2009 · driest 2 mm in 2010	52

Typical days per month at NEW ORLEANS ALVIN CALLENDER FL, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	1	0	4	4
February	3	0	2	3
March	9	0	<1	4
April	18	1	0	3
May	28	13	0	3
June	30	24	0	6
July	30	28	0	6
August	30	27	0	5
September	29	21	0	3
October	23	5	0	2
November	9	<1	<1	3
December	3	0	3	3

How often, not how much — every day in NEW ORLEANS ALVIN CALLENDER FL’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	22%	27%	12%	31%	13.5–19.2°C
February	30%	27%	13%	30%	15.5–21.1°C
March	53%	23%	12%	19%	19.5–23.7°C
April	77%	18%	9%	12%	23.8–27.2°C
May	78%	22%	11%	24%	27.7–30.2°C
June	68%	32%	14%	43%	30.0–32.9°C
July	58%	42%	17%	62%	30.7–33.7°C
August	61%	39%	17%	54%	30.8–33.8°C
September	71%	28%	13%	31%	29.0–31.6°C
October	79%	17%	8%	15%	25.2–28.0°C
November	54%	20%	10%	19%	19.7–23.8°C
December	30%	24%	11%	23%	16.0–19.9°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1958Each stripe is one year’s mean temperature against the 45-year average. Warmest: 2025. Coolest: 1968.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4314617
NOAA station: USW00012958 · NEW ORLEANS ALVIN CALLENDER FL
Station distance: 14.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 29.69°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from NEW ORLEANS ALVIN CALLENDER FL is what differs

Belle Chasse→Augusta→Bayou Cane→Belair→Bertrandville→Braithwaite→

Or put two places side by side: Alliance vs Belle Chasse

Best time to visitAlliance.

April

May

November

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Alliance.

The whole year,
without the guesswork.

Nearby, measured,
and named.