United States · 1991–2020

Best time to visit
Aetna Springs.

October leads for comfortable weather in Aetna Springs: typically 22.7°C by day, 10.2°C at night, with 48 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober
Typical high22.7°C
Typical low10.2°C
Rain in October48 mm
Comfort

October

October · May · June

85climate match
Beach

July

July · August · September

75climate match
Outdoors

October

October · May · April

89climate match

The weakest month is December, scoring 8 against October’s 85days reach only 11.8°C, 12° below the 24°C the score treats as ideal, and 213 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
1312.4° / 4.4°
Feb
1813.5° / 4.7°
Mar
3516.1° / 5.3°
Apr
6119° / 6.1°
May
8322.8° / 8.5°
Jun
8326.8° / 10.9°
Jul
7829.4° / 12.5°
Aug
7829.3° / 12.5°
Sep
8327.7° / 12.2°
Oct
8522.7° / 10.2°
Nov
4315.7° / 6.4°
Dec
811.8° / 4.2°
Monthly climate evidence for Aetna Springs — daylight is calculated from latitude, everything else is measured
MonthDayNightRainWet daysDaylightComfortCoverage
January12.4°C4.4°C196 mm11.19 h 4413Strong coverage
February13.5°C4.7°C200 mm9.810 h 4118Strong coverage
March16.1°C5.3°C145 mm9.611 h 5035Strong coverage
April19°C6.1°C64 mm6.113 h 0961Strong coverage
May22.8°C8.5°C39 mm3.514 h 1583Strong coverage
June26.8°C10.9°C8 mm1.114 h 5183Strong coverage
July29.4°C12.5°C0 mm014 h 3778Strong coverage
August29.3°C12.5°C1 mm0.113 h 4078Strong coverage
September27.7°C12.2°C4 mm0.812 h 2383Strong coverage
October22.7°C10.2°C48 mm3.211 h 0785Strong coverage
November15.7°C6.4°C105 mm7.210 h 0143Strong coverage
December11.8°C4.2°C213 mm11.39 h 298Strong coverage

What has changed

Aetna Springs runs +0.5°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
+1.6
Feb
+1.3
Mar
+1.1
Apr
+1.5
May
0.0
Jun
-0.2
Jul
-1.5
Aug
-1.1
Sep
+0.1
Oct
+0.7
Nov
+0.9
Dec
+1.1
October daytime highs, 20112025. Last recorded: 19.6°C.
Records at ANGWIN PACIFIC UNION COLLEGE, 1952–2026
MonthRecord highRecord lowWettest dayWettest / driest monthYears
January25.0°C14 Jan 2009-7.2°C22 Jan 1962149 mm21 Jan 1967719 mm1995 · driest 1 mm in 201571
February25.6°C14 Feb 1977-6.7°C6 Feb 1989188 mm17 Feb 1986724 mm1986 · driest 0 mm in 202073
March30.6°C20 Mar 2026-5.0°C5 Mar 1971156 mm9 Mar 1995486 mm1983 · driest 1 mm in 198873
April32.8°C8 Apr 1989-3.9°C13 Apr 199878 mm11 Apr 1982219 mm1963 · driest 0 mm in 202373
May38.3°C27 May 1984-2.8°C6 May 196458 mm18 May 2005163 mm2005 · driest 0 mm in 197475
June41.1°C15 Jun 19610.6°C12 Jun 195236 mm2 Jun 196778 mm1967 · driest 0 mm in 202074
July43.3°C15 Jul 19720.0°C4 Jul 197528 mm9 Jul 197429 mm1974 · driest 0 mm in 197074
August41.7°C11 Aug 19713.9°C5 Aug 195420 mm12 Aug 196536 mm1976 · driest 0 mm in 200773
September42.2°C1 Sep 19550.0°C30 Sep 1971100 mm18 Sep 1959101 mm1959 · driest 0 mm in 195271
October37.2°C3 Oct 1980-2.8°C29 Oct 1971194 mm24 Oct 2021368 mm1962 · driest 0 mm in 202071
November30.0°C1 Nov 1966-4.4°C19 Nov 1977141 mm30 Nov 2012440 mm1973 · driest 0 mm in 195972
December23.9°C2 Dec 1958-10.0°C9 Dec 1972163 mm19 Dec 1955761 mm1955 · driest 0 mm in 198971
Typical days per month at ANGWIN PACIFIC UNION COLLEGE, 1991–2020
MonthDays 25°C+Days 30°C+Frost nightsHeavy rain (10 mm+)
January0045
February<1036
March1024
April4<112
May113<11
June2080<1
July281400
August271300
September22100<1
October11301
November<1013
December0046
How often, not how much — every day in ANGWIN PACIFIC UNION COLLEGE’s record sorted by what it was actually like, rather than averaged
MonthWarm & dry daysWet daysWashoutsWeek with 3+ wet daysDaytime mean has ranged
January4%34%18%43%9.3–14.0°C
February9%33%19%42%10.8–16.2°C
March20%31%14%37%12.4–18.2°C
April42%19%7%20%15.7–21.2°C
May71%10%3%8%19.8–24.8°C
June92%4%<1%2%24.2–29.3°C
July100%<1%0%0%28.2–32.3°C
August98%1%<1%<1%27.7–31.7°C
September93%4%1%2%25.5–29.1°C
October67%12%5%12%19.7–25.0°C
November19%26%13%33%12.6–17.8°C
December2%35%19%44%9.5–13.8°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.

1953Each stripe is one year’s mean temperature against the 60-year average. Warmest: 2014. Coolest: 1971.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity
GeoNames 5322508
NOAA station
USC00040212 · ANGWIN PACIFIC UNION COLLEGE
Station distance
9.7 km from the place centre
Climate period
1991–2020
Minimum month coverage
26 usable years
Daylight
Calculated from latitude 38.65°, 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 ANGWIN PACIFIC UNION COLLEGE is what differs

AngwinHowell MountainPope ValleyVeteran HeightsWalter SpringsLake Berryessa