United States · 1991–2020

Best time to visit
Callaghan.

September leads for comfortable weather in Callaghan: typically 26.6°C by day, 12.3°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.6°C

Typical low12.3°C

Rain in September89 mm

Comfort

September

September · May · August

76climate match

Beach

August

August · July · June

69climate match

Outdoors

October

October · April · September

80climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 7.2°C, 17° below the 24°C the score treats as ideal, and nights drop to -4.6°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

57.2° / -4.6°

Feb

109.2° / -3.6°

Mar

2714.3° / -0.3°

Apr

5620.8° / 4.3°

May

6825.1° / 9.4°

Jun

6628.7° / 14.1°

Jul

6130.6° / 16.4°

Aug

6729.8° / 15.9°

Sep

7626.6° / 12.3°

Oct

6721.2° / 5.8°

Nov

3414.6° / 0°

Dec

89° / -2.6°

Monthly climate evidence for Callaghan — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7.2°C	-4.6°C	66 mm	7.4	9 h 49	5	Strong coverage
February	9.2°C	-3.6°C	60 mm	7.2	10 h 44	10	Strong coverage
March	14.3°C	-0.3°C	86 mm	9.5	11 h 50	27	Strong coverage
April	20.8°C	4.3°C	92 mm	10.1	13 h 07	56	Strong coverage
May	25.1°C	9.4°C	109 mm	12	14 h 11	68	Strong coverage
June	28.7°C	14.1°C	106 mm	10.3	14 h 46	66	Strong coverage
July	30.6°C	16.4°C	100 mm	9.9	14 h 32	61	Strong coverage
August	29.8°C	15.9°C	83 mm	9	13 h 37	67	Strong coverage
September	26.6°C	12.3°C	89 mm	6.7	12 h 23	76	Strong coverage
October	21.2°C	5.8°C	64 mm	6.8	11 h 09	67	Strong coverage
November	14.6°C	0°C	70 mm	6.9	10 h 05	34	Strong coverage
December	9°C	-2.6°C	74 mm	8.6	9 h 33	8	Strong coverage

What has changed

Callaghan runs -1.0°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

-1.0

Feb

-0.1

Mar

-1.5

Apr

-1.0

May

-1.5

Jun

-1.1

Jul

-0.7

Aug

-1.7

Sep

-1.0

Oct

-1.0

Nov

-1.4

Dec

+0.2

September daytime highs, 2011–2025. Last recorded: 26.0°C.

Records at COVINGTON FLTR PLT, 1960–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C31 Jan 2002	-28.3°C21 Jan 1985	67 mm15 Jan 1995	166 mm1996 · driest 9 mm in 1981	63
February	26.1°C26 Feb 2000	-20.6°C4 Feb 1996	52 mm14 Feb 1984	168 mm2025 · driest 11 mm in 1968	63
March	30.6°C28 Mar 1989	-17.2°C3 Mar 1980	57 mm12 Mar 1963	179 mm1993 · driest 19 mm in 1972	65
April	33.9°C26 Apr 2009	-9.4°C10 Apr 1985	82 mm26 Apr 1978	201 mm1987 · driest 15 mm in 1976	65
May	37.2°C20 May 1996	-3.3°C2 May 1963	99 mm28 May 1981	201 mm2025 · driest 18 mm in 1970	66
June	37.8°C30 Jun 2012	1.1°C11 Jun 1972	107 mm24 Jun 2016	270 mm2016 · driest 20 mm in 1999	65
July	38.9°C17 Jul 1988	5.0°C12 Jul 1963	99 mm29 Jul 2005	235 mm2005 · driest 24 mm in 1996	66
August	38.9°C17 Aug 1988	3.9°C30 Aug 1986	88 mm20 Aug 1969	246 mm1984 · driest 24 mm in 1987	65
September	36.1°C10 Sep 2007	-2.2°C25 Sep 1963	95 mm30 Sep 2016	232 mm2004 · driest 1 mm in 1985	63
October	33.9°C4 Oct 2019	-10.0°C27 Oct 1962	71 mm19 Oct 1968	197 mm1976 · driest 1 mm in 2000	65
November	29.4°C5 Nov 2003	-12.8°C23 Nov 1971	203 mm4 Nov 1985	388 mm1985 · driest 9 mm in 2001	65
December	26.7°C4 Dec 1982	-23.3°C25 Dec 1983	43 mm1 Dec 2010	152 mm1973 · driest 5 mm in 1965	64

Typical days per month at COVINGTON FLTR PLT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	25	2	1
February	<1	0	23	2	<1
March	2	<1	18	3	<1
April	9	2	6	3	<1
May	18	6	<1	4	0
June	26	13	0	3	0
July	30	20	0	3	0
August	28	16	0	3	0
September	20	7	<1	3	0
October	8	<1	5	2	0
November	1	0	18	3	0
December	<1	0	23	3	<1

How often, not how much — every day in COVINGTON FLTR PLT’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	2%	24%	7%	23%	4.0–10.1°C
February	5%	26%	8%	27%	5.7–12.2°C
March	20%	29%	8%	36%	11.9–18.0°C
April	43%	31%	8%	38%	18.6–23.2°C
May	58%	36%	11%	48%	22.9–27.4°C
June	68%	32%	10%	39%	26.4–30.5°C
July	68%	32%	11%	39%	28.9–32.6°C
August	72%	28%	9%	31%	27.8–31.6°C
September	74%	23%	9%	23%	24.8–28.7°C
October	53%	22%	8%	21%	19.1–23.3°C
November	18%	24%	8%	22%	11.8–17.7°C
December	3%	26%	8%	27%	5.8–12.1°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.

1961Each stripe is one year’s mean temperature against the 54-year average. Warmest: 1990. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4750413
NOAA station: USC00442044 · COVINGTON FLTR PLT
Station distance: 7.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 37.81°, 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 COVINGTON FLTR PLT is what differs

Covington→Clifton Forge→Fairlawn→Selma→Iron Gate→Low Moor→

Or put two places side by side: Callaghan vs Covington

Best time to visitCallaghan.

September

August

October

The whole year,without the guesswork.

Callaghan runs -1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Callaghan.

The whole year,
without the guesswork.

Callaghan runs -1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.