United States · 1991–2020

Best time to visit
Del Rio Woods.

October leads for comfortable weather in Del Rio Woods: typically 25.1°C by day, 9.1°C at night, with 48 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high25.1°C

Typical low9.1°C

Rain in October48 mm

Comfort

October

October · May · September

84climate match

Beach

June

June · September · July

71climate match

Outdoors

October

October · April · May

80climate match

The weakest month is January, scoring 15 against October’s 84 — days reach only 14.5°C, 9° below the 24°C the score treats as ideal, and 224 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

1514.5° / 4.4°

Feb

2516.7° / 5.1°

Mar

4419° / 6°

Apr

7422.5° / 7.5°

May

8026.5° / 9.8°

Jun

7430.1° / 12°

Jul

7031.8° / 12.5°

Aug

6931.9° / 12.1°

Sep

7529.7° / 11.4°

Oct

8425.1° / 9.1°

Nov

5218.5° / 6°

Dec

1514.6° / 3.9°

Monthly climate evidence for Del Rio Woods — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 37 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14.5°C	4.4°C	224 mm	11.9	11.5°C	9 h 44	15	Good coverage
February	16.7°C	5.1°C	223 mm	10.2	11.7°C	10 h 41	25	Good coverage
March	19°C	6°C	162 mm	9.8	11.5°C	11 h 50	44	Good coverage
April	22.5°C	7.5°C	71 mm	5.9	10.7°C	13 h 09	74	Good coverage
May	26.5°C	9.8°C	47 mm	3.8	10.6°C	14 h 15	80	Good coverage
June	30.1°C	12°C	5 mm	0.7	10.7°C	14 h 51	74	Good coverage
July	31.8°C	12.5°C	0 mm	0.1	11.5°C	14 h 37	70	Good coverage
August	31.9°C	12.1°C	1 mm	0.2	12.4°C	13 h 40	69	Good coverage
September	29.7°C	11.4°C	1 mm	0.4	12.9°C	12 h 23	75	Good coverage
October	25.1°C	9.1°C	48 mm	2.9	12.8°C	11 h 07	84	Good coverage
November	18.5°C	6°C	107 mm	6.8	12.4°C	10 h 01	52	Good coverage
December	14.6°C	3.9°C	228 mm	11.4	11.8°C	9 h 29	15	Good coverage

What has changed

Del Rio Woods 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

+2.2

Feb

+0.3

Mar

-1.4

Apr

-0.1

May

-0.4

Jun

-0.7

Jul

-1.6

Aug

-0.2

Sep

+0.1

Oct

+0.8

Nov

+0.3

Dec

+1.4

October daytime highs, 2011–2025. Last recorded: 23.7°C.

Records at HEALDSBURG, 1899–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	29.4°C8 Jan 1962	-7.8°C8 Jan 1937	162 mm23 Jan 1916	856 mm1909 · driest 11 mm in 1976	119
February	31.1°C24 Feb 1926	-6.1°C4 Feb 1903	166 mm26 Feb 2019	646 mm1998 · driest 0 mm in 2018	121
March	35.0°C18 Mar 1914	-2.8°C14 Mar 1944	159 mm9 Mar 1995	535 mm1907 · driest 2 mm in 1988	121
April	38.9°C10 Apr 1908	-4.4°C3 Apr 1901	83 mm27 Apr 1953	329 mm1948 · driest 0 mm in 1907	122
May	42.2°C31 May 1912	-1.1°C16 May 1929	137 mm18 May 2005	242 mm2005 · driest 0 mm in 1909	122
June	46.7°C3 Jun 1912	0.0°C23 Jun 1920	53 mm2 Jun 1967	55 mm1967 · driest 0 mm in 1965	121
July	46.7°C13 Jul 1972	-0.6°C18 Jul 1921	40 mm8 Jul 1974	43 mm1974 · driest 0 mm in 1955	120
August	45.6°C6 Aug 1913	0.6°C17 Aug 1925	52 mm28 Aug 1954	81 mm1954 · driest 0 mm in 1932	121
September	47.2°C6 Sep 2022	-1.1°C8 Sep 1901	115 mm18 Sep 1959	115 mm1959 · driest 0 mm in 1952	120
October	42.2°C3 Oct 1980	-3.3°C29 Oct 1946	166 mm24 Oct 2021	296 mm2021 · driest 0 mm in 1959	120
November	36.7°C11 Nov 1906	-3.9°C13 Nov 1916	198 mm20 Nov 2024	539 mm1973 · driest 0 mm in 1933	120
December	28.3°C26 Dec 1967	-10.0°C22 Dec 1990	208 mm3 Dec 1980	640 mm2002 · driest 0 mm in 1989	121

Typical days per month at HEALDSBURG, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	4	6
February	1	0	2	6
March	3	<1	<1	5
April	8	3	0	2
May	18	7	0	2
June	23	14	0	<1
July	27	19	0	0
August	28	20	0	0
September	24	13	0	0
October	14	5	0	1
November	2	<1	2	3
December	<1	0	5	6

How often, not how much — every day in HEALDSBURG’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	7%	38%	21%	46%	12.1–16.3°C
February	24%	35%	19%	42%	14.6–19.5°C
March	40%	31%	15%	34%	16.7–22.5°C
April	65%	19%	7%	18%	19.9–24.8°C
May	84%	11%	4%	7%	22.8–28.0°C
June	96%	3%	<1%	1%	26.9–31.7°C
July	100%	<1%	<1%	<1%	29.4–33.6°C
August	99%	<1%	<1%	<1%	28.9–33.2°C
September	95%	4%	1%	2%	27.8–32.1°C
October	80%	13%	6%	11%	22.9–28.3°C
November	39%	25%	13%	32%	17.0–21.9°C
December	8%	34%	19%	41%	12.4–16.7°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.

1900Each stripe is one year’s mean temperature against the 100-year average. Warmest: 1981. Coolest: 1922.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5342454
NOAA station: USC00043875 · HEALDSBURG
Station distance: 2.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 38.62°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 37 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 HEALDSBURG is what differs

Healdsburg→Geyserville→Bailhache→Camp Rose→Chiquita→Cozzens Corner→

Or put two places side by side: Del Rio Woods vs Healdsburg

Best time to visitDel Rio Woods.

October

June

October

The whole year,without the guesswork.

Del Rio Woods runs +0.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Del Rio Woods.

The whole year,
without the guesswork.

Del Rio Woods runs +0.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.