United States · 1991–2020

Best time to visit
Cordelia Junction.

May leads for comfortable weather in Cordelia Junction: typically 25.5°C by day, 10.9°C at night, with 18 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay
Typical high25.5°C
Typical low10.9°C
Rain in May18 mm
Comfort

May

May · October · April

88climate match
Beach

June

June · September · July

76climate match
Outdoors

April

April · November · May

89climate match

The weakest month is December, scoring 28 against May’s 88days reach only 13.8°C, 10° below the 24°C the score treats as ideal.

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
3013.7° / 4.4°
Feb
4116.5° / 5.8°
Mar
5819.2° / 7.2°
Apr
8021.9° / 8.5°
May
8825.5° / 10.9°
Jun
7829.7° / 13.1°
Jul
7232.1° / 14.1°
Aug
7231.9° / 14.2°
Sep
7530.7° / 13.3°
Oct
8725.8° / 11°
Nov
6218.8° / 7.1°
Dec
2813.8° / 4.2°
Monthly climate evidence for Cordelia Junction — daylight is calculated from latitude, everything else is measured
MonthDayNightRainWet daysDaylightComfortCoverage
January13.7°C4.4°C119 mm99 h 4630Strong coverage
February16.5°C5.8°C126 mm8.910 h 4341Strong coverage
March19.2°C7.2°C84 mm8.211 h 5058Strong coverage
April21.9°C8.5°C39 mm4.413 h 0880Strong coverage
May25.5°C10.9°C18 mm2.414 h 1388Strong coverage
June29.7°C13.1°C4 mm0.614 h 4878Strong coverage
July32.1°C14.1°C0 mm014 h 3572Strong coverage
August31.9°C14.2°C1 mm0.113 h 3972Strong coverage
September30.7°C13.3°C3 mm0.512 h 2375Strong coverage
October25.8°C11°C28 mm2.311 h 0887Strong coverage
November18.8°C7.1°C64 mm5.510 h 0362Strong coverage
December13.8°C4.2°C136 mm8.89 h 3128Strong coverage

What has changed

Cordelia Junction runs +0.9°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
+2.3
Feb
+0.6
Mar
+0.1
Apr
+0.9
May
+0.4
Jun
+1.3
Jul
+0.8
Aug
+0.9
Sep
+0.8
Oct
+0.5
Nov
+0.6
Dec
+1.5
May daytime highs, 20112025. Last recorded: 28.2°C.
Records at FAIRFIELD, 1950–2026
MonthRecord highRecord lowWettest dayWettest / driest monthYears
January25.6°C18 Jan 2021-7.8°C1 Jan 197993 mm11 Jan 1979353 mm2017 · driest 0 mm in 201575
February26.7°C22 Feb 1968-4.4°C6 Feb 198997 mm3 Feb 1998374 mm1998 · driest 0 mm in 202076
March32.2°C20 Mar 2026-1.7°C2 Mar 197172 mm13 Mar 1983277 mm1983 · driest 0 mm in 202676
April36.7°C17 Apr 1954-3.3°C8 Apr 201061 mm11 Apr 1982139 mm1963 · driest 1 mm in 202176
May43.9°C29 May 19841.7°C4 May 197655 mm15 May 199684 mm1998 · driest 0 mm in 196976
June43.9°C23 Jun 19810.0°C9 Jun 201141 mm16 Jun 199546 mm1995 · driest 0 mm in 196276
July45.6°C24 Jul 20063.3°C26 Jul 198212 mm9 Jul 197415 mm1974 · driest 0 mm in 199474
August43.9°C5 Aug 19981.7°C15 Aug 198626 mm22 Aug 196830 mm1968 · driest 0 mm in 199375
September45.6°C5 Sep 20223.9°C20 Sep 198663 mm18 Sep 195963 mm1959 · driest 0 mm in 196474
October40.0°C1 Oct 19520.0°C31 Oct 1956155 mm24 Oct 2021215 mm2021 · driest 0 mm in 200375
November30.6°C2 Nov 1967-6.1°C21 Nov 1985100 mm22 Nov 1977183 mm1973 · driest 0 mm in 195974
December25.6°C1 Dec 1977-9.4°C25 Dec 2011142 mm14 Dec 2002424 mm2005 · driest 0 mm in 198976
Typical days per month at FAIRFIELD, 1991–2020
MonthDays 25°C+Days 30°C+Frost nightsHeavy rain (10 mm+)
January0034
February<10<14
March3<1<13
April82<11
May1560<1
June2414<1<1
July292100
August292100
September26170<1
October1870<1
November30<12
December0034
How often, not how much — every day in FAIRFIELD’s record sorted by what it was actually like, rather than averaged
MonthWarm & dry daysWet daysWashoutsWeek with 3+ wet daysDaytime mean has ranged
January4%29%13%38%11.0–15.7°C
February18%28%13%37%14.8–18.7°C
March39%25%10%28%16.8–21.4°C
April62%15%4%13%19.4–24.3°C
May86%7%1%4%23.1–28.2°C
June97%2%<1%<1%26.7–31.9°C
July100%<1%0%0%29.8–34.3°C
August99%<1%<1%<1%29.6–33.7°C
September97%3%<1%2%28.3–32.6°C
October86%8%3%8%23.5–28.0°C
November36%19%8%23%16.4–20.9°C
December4%27%12%33%11.4–15.7°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.

1951Each stripe is one year’s mean temperature against the 69-year average. Warmest: 2024. Coolest: 1975.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity
GeoNames 5339537
NOAA station
USC00042934 · FAIRFIELD
Station distance
8.9 km from the place centre
Climate period
1991–2020
Minimum month coverage
27 usable years
Daylight
Calculated from latitude 38.22°, 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 FAIRFIELD is what differs

FairfieldSuisunGreen ValleyChadbourneClimaCordelia