United States · 1991–2020

Best time to visit
Columbia City.

September leads for comfortable weather in Columbia City: typically 25.3°C by day, 10.7°C at night, with 38 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.3°C

Typical low10.7°C

Rain in September38 mm

Comfort

September

September · June · July

86climate match

Beach

August

August · July · September

76climate match

Outdoors

June

June · September · May

81climate match

The weakest month is January, scoring 5 against September’s 86 — days reach only 8.1°C, 16° 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

58.1° / 0.8°

Feb

1111° / 1.1°

Mar

2113.9° / 2.8°

Apr

3816.9° / 4.4°

May

6521.1° / 7.5°

Jun

8423.7° / 10.2°

Jul

8327.9° / 12.8°

Aug

8228.3° / 13°

Sep

8625.3° / 10.7°

Oct

5118.1° / 6.7°

Nov

511.2° / 3.1°

Dec

57.8° / 1.1°

Monthly climate evidence for Columbia City — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.1°C	0.8°C	168 mm	15.7	9 h 01	5	Good coverage
February	11°C	1.1°C	124 mm	12.6	10 h 17	11	Good coverage
March	13.9°C	2.8°C	127 mm	14.8	11 h 45	21	Good coverage
April	16.9°C	4.4°C	101 mm	14.1	13 h 28	38	Good coverage
May	21.1°C	7.5°C	76 mm	10.4	14 h 55	65	Good coverage
June	23.7°C	10.2°C	51 mm	7.1	15 h 43	84	Good coverage
July	27.9°C	12.8°C	15 mm	2.6	15 h 24	83	Good coverage
August	28.3°C	13°C	17 mm	2.7	14 h 08	82	Good coverage
September	25.3°C	10.7°C	38 mm	4.8	12 h 29	86	Good coverage
October	18.1°C	6.7°C	93 mm	10.2	10 h 50	51	Good coverage
November	11.2°C	3.1°C	189 mm	15.7	9 h 24	5	Good coverage
December	7.8°C	1.1°C	199 mm	16.5	8 h 40	5	Good coverage

Records at SAINT HELENS RFD, 1976–2015
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.2°C18 Jan 2005	-12.8°C29 Jan 1980	58 mm9 Jan 1990	282 mm2006 · driest 11 mm in 1985	38
February	21.7°C1 Feb 1992	-15.6°C4 Feb 1989	51 mm23 Feb 1986	276 mm1999 · driest 9 mm in 1993	37
March	27.8°C27 Mar 1994	-7.8°C24 Mar 2003	70 mm1 Mar 1983	230 mm2012 · driest 48 mm in 1992	38
April	36.7°C30 Apr 1998	-10.6°C9 Apr 2002	47 mm4 Apr 1991	188 mm1991 · driest 8 mm in 2015	38
May	38.9°C28 May 1983	-8.3°C6 May 1999	33 mm5 May 1979	133 mm1984 · driest 1 mm in 1992	36
June	40.0°C13 Jun 2002	-3.9°C3 Jun 2003	51 mm9 Jun 2000	115 mm2005 · driest 5 mm in 1987	37
July	41.1°C23 Jul 2004	3.3°C7 Jul 2004	28 mm9 Jul 1995	93 mm1983 · driest 0 mm in 2009	38
August	41.7°C10 Aug 1981	1.1°C15 Aug 1982	35 mm30 Aug 1983	98 mm1976 · driest 0 mm in 2005	38
September	41.1°C2 Sep 1988	1.1°C12 Sep 1992	46 mm20 Sep 1982	117 mm1977 · driest 0 mm in 2008	36
October	34.4°C1 Oct 1987	-5.0°C31 Oct 2002	51 mm11 Oct 1995	197 mm1990 · driest 6 mm in 1987	36
November	22.2°C3 Nov 2010	-12.2°C24 Nov 1985	75 mm22 Nov 2011	382 mm2006 · driest 21 mm in 1976	38
December	18.3°C3 Dec 1993	-17.2°C21 Dec 1990	99 mm2 Dec 2007	324 mm2007 · driest 0 mm in 2008	38

Typical days per month at SAINT HELENS RFD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	12	6
February	0	0	10	4
March	<1	0	7	4
April	2	<1	3	3
May	7	2	1	2
June	10	3	<1	1
July	19	10	0	<1
August	20	11	0	<1
September	13	5	0	1
October	2	<1	<1	3
November	0	0	6	6
December	0	0	11	6

How often, not how much — every day in SAINT HELENS RFD’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	0%	50%	19%	62%	5.8–10.3°C
February	1%	47%	17%	63%	8.3–13.1°C
March	10%	48%	13%	65%	11.1–16.8°C
April	26%	45%	10%	57%	14.2–19.5°C
May	45%	34%	8%	39%	18.1–24.2°C
June	67%	23%	5%	24%	20.5–26.7°C
July	87%	10%	2%	7%	23.9–31.3°C
August	88%	11%	3%	13%	25.0–30.5°C
September	73%	17%	5%	21%	21.5–27.9°C
October	31%	31%	10%	39%	15.9–20.3°C
November	<1%	53%	20%	72%	9.3–13.6°C
December	0%	52%	21%	69%	4.8–9.7°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.

1977Each stripe is one year’s mean temperature against the 28-year average. Warmest: 1992. Coolest: 2011.2013

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5720167
NOAA station: USC00357466 · SAINT HELENS RFD
Station distance: 6.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 45.89°, 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 SAINT HELENS RFD is what differs

Saint Helens→Woodland→Warren→Deer Island→Bachelor Flat (historical)→Canaan→

Or put two places side by side: Columbia City vs Saint Helens

Best time to visitColumbia City.