United States · 1991–2020

Best time to visit
Acorn.

August leads for comfortable weather in Acorn: typically 23.5°C by day, 13.1°C at night, with 0 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high23.5°C

Typical low13.1°C

Rain in August0 mm

Comfort

August

August · September · July

95climate match

Beach

September

September · August · July

62climate match

Outdoors

May

May · April · November

96climate match

The weakest month is January, scoring 56 against August’s 95 — days reach only 18.7°C, 5° below the 24°C the score treats as ideal, and nights drop to 6.2°C.

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

5618.7° / 6.2°

Feb

5719.1° / 6.6°

Mar

6720.1° / 7.6°

Apr

7820.9° / 8.4°

May

8221.3° / 10.2°

Jun

8822.2° / 11.4°

Jul

9323° / 12.9°

Aug

9523.5° / 13.1°

Sep

9524.2° / 12.6°

Oct

9224° / 10.5°

Nov

7721.2° / 7.7°

Dec

5818.3° / 5.5°

Monthly climate evidence for Acorn — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 12 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	18.7°C	6.2°C	86 mm	6.7	13.6°C	10 h 04	56	Strong coverage
February	19.1°C	6.6°C	91 mm	7	13.3°C	10 h 53	57	Strong coverage
March	20.1°C	7.6°C	68 mm	6	12.9°C	11 h 52	67	Strong coverage
April	20.9°C	8.4°C	23 mm	2.9	12.2°C	13 h 00	78	Strong coverage
May	21.3°C	10.2°C	8 mm	1.3	12.5°C	13 h 57	82	Strong coverage
June	22.2°C	11.4°C	1 mm	0.2	13.3°C	14 h 28	88	Strong coverage
July	23°C	12.9°C	1 mm	0.2	14.5°C	14 h 16	93	Strong coverage
August	23.5°C	13.1°C	0 mm	0.1	15.1°C	13 h 27	95	Strong coverage
September	24.2°C	12.6°C	1 mm	0.3	15.6°C	12 h 21	95	Strong coverage
October	24°C	10.5°C	18 mm	2.1	15.8°C	11 h 15	92	Strong coverage
November	21.2°C	7.7°C	31 mm	3.7	15.1°C	10 h 18	77	Strong coverage
December	18.3°C	5.5°C	59 mm	6	14.0°C	9 h 51	58	Strong coverage

What has changed

Acorn runs -0.1°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

-0.1

Feb

-0.5

Mar

+0.3

Apr

+0.2

May

-0.2

Jun

-0.1

Jul

-0.1

Aug

-0.3

Sep

-0.2

Oct

+0.1

Nov

+0.1

Dec

-0.7

August daytime highs, 2011–2025. Last recorded: 22.9°C.

Records at LOMPOC, 1917–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.1°C31 Jan 2003	-6.1°C1 Jan 1919	97 mm9 Jan 2023	391 mm1995 · driest 0 mm in 2003	79
February	32.8°C27 Feb 2026	-3.3°C17 Feb 1956	83 mm17 Feb 2017	391 mm1998 · driest 0 mm in 2020	78
March	35.6°C26 Mar 1988	-2.8°C5 Mar 1967	101 mm20 Mar 2011	296 mm1991 · driest 0 mm in 1972	80
April	40.6°C6 Apr 1989	-1.7°C9 Apr 1953	64 mm17 Apr 2000	120 mm1958 · driest 0 mm in 2005	79
May	36.1°C14 May 2014	1.1°C18 May 1974	31 mm8 May 1977	65 mm1977 · driest 0 mm in 2018	79
June	37.2°C24 Jun 1976	1.1°C15 Jun 1979	12 mm16 Jun 1995	18 mm2011 · driest 0 mm in 1980	78
July	37.2°C9 Jul 1992	3.9°C4 Jul 2024	8 mm10 Jul 1950	13 mm1950 · driest 0 mm in 1962	76
August	38.3°C31 Aug 1955	2.8°C27 Aug 1954	14 mm19 Aug 1976	15 mm1976 · driest 0 mm in 2013	79
September	41.1°C24 Sep 1978	2.2°C30 Sep 1950	51 mm19 Sep 2022	68 mm1976 · driest 0 mm in 1993	77
October	43.3°C4 Oct 1987	-2.8°C23 Oct 1961	52 mm14 Oct 2009	91 mm2004 · driest 0 mm in 1978	79
November	36.7°C1 Nov 1997	-4.4°C27 Nov 1919	66 mm14 Nov 1953	161 mm1965 · driest 0 mm in 1992	78
December	32.2°C3 Dec 1958	-6.7°C22 Dec 1990	70 mm24 Dec 2025	226 mm2010 · driest 0 mm in 1989	78

Typical days per month at LOMPOC, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	2	0	1	3
February	3	<1	<1	3
March	3	<1	0	2
April	4	<1	0	<1
May	4	<1	0	<1
June	5	<1	0	0
July	7	<1	0	0
August	8	<1	0	0
September	10	2	0	0
October	11	3	0	<1
November	5	1	<1	1
December	1	0	2	2

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 93); on 2011–2025 it is September (97). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LOMPOC’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	32%	20%	8%	23%	16.5–21.1°C
February	34%	22%	9%	26%	16.8–21.4°C
March	39%	20%	7%	19%	17.0–21.9°C
April	46%	10%	3%	8%	18.0–22.5°C
May	51%	4%	<1%	<1%	18.5–22.7°C
June	73%	1%	0%	0%	19.7–24.0°C
July	87%	<1%	0%	0%	20.8–25.0°C
August	92%	<1%	0%	0%	21.1–25.2°C
September	91%	2%	<1%	<1%	22.0–26.1°C
October	82%	6%	2%	3%	21.8–26.1°C
November	57%	13%	4%	14%	19.0–23.7°C
December	33%	18%	5%	19%	16.5–20.8°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.

1919Each stripe is one year’s mean temperature against the 68-year average. Warmest: 2014. Coolest: 1919.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5322305
NOAA station: USC00045064 · LOMPOC
Station distance: 3.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 34.65°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 12 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 LOMPOC is what differs

Lompoc→Vandenberg Village→Mission Hills→Vandenberg Space Force Base→Los Alamos→Arguello→

Or put two places side by side: Acorn vs Lompoc

Best time to visitAcorn.

August

September

May

The whole year,without the guesswork.

Acorn runs -0.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Acorn.

The whole year,
without the guesswork.

Acorn runs -0.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.