United States · 1991–2020

Best time to visit
Kelso.

July leads for comfortable weather in Kelso: typically 26.1°C by day, 12.3°C at night, with 16 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high26.1°C

Typical low12.3°C

Rain in July16 mm

Comfort

July

July · August · September

88climate match

Beach

July

July · August · September

67climate match

Outdoors

June

June · September · May

83climate match

The weakest month is January, scoring 5 against July’s 88 — days reach only 8.4°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

58.4° / 2.1°

Feb

1011° / 2°

Mar

1913.6° / 3.5°

Apr

3616.4° / 5°

May

6220.3° / 7.8°

Jun

8022.5° / 10.2°

Jul

8826.1° / 12.3°

Aug

8626.6° / 12.2°

Sep

8623.9° / 10.1°

Oct

4517.5° / 7.3°

Nov

511.4° / 4.1°

Dec

58° / 2.1°

Monthly climate evidence for Kelso — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.4°C	2.1°C	168 mm	18.7	9 h	5	Strong coverage
February	11°C	2°C	122 mm	15.4	10 h 16	10	Strong coverage
March	13.6°C	3.5°C	124 mm	17.3	11 h 45	19	Strong coverage
April	16.4°C	5°C	103 mm	15.4	13 h 29	36	Strong coverage
May	20.3°C	7.8°C	75 mm	10.8	14 h 56	62	Strong coverage
June	22.5°C	10.2°C	51 mm	8	15 h 45	80	Strong coverage
July	26.1°C	12.3°C	16 mm	3.1	15 h 26	88	Strong coverage
August	26.6°C	12.2°C	25 mm	3.6	14 h 09	86	Strong coverage
September	23.9°C	10.1°C	46 mm	6.6	12 h 29	86	Strong coverage
October	17.5°C	7.3°C	114 mm	13	10 h 50	45	Strong coverage
November	11.4°C	4.1°C	187 mm	18.8	9 h 22	5	Strong coverage
December	8°C	2.1°C	188 mm	19.5	8 h 38	5	Strong coverage

What has changed

Kelso runs +1.4°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

+1.4

Feb

-0.1

Mar

+0.7

Apr

+1.6

May

+2.0

Jun

+1.7

Jul

+2.3

Aug

+2.6

Sep

+1.9

Oct

+1.1

Nov

+0.7

Dec

+1.0

July daytime highs, 2011–2025. Last recorded: 28.0°C.

Records at LONGVIEW, 1925–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.3°C28 Jan 1931	-21.1°C22 Jan 1930	88 mm7 Jan 2009	347 mm2006 · driest 7 mm in 1985	100
February	22.8°C28 Feb 1968	-16.7°C2 Feb 1950	96 mm24 Feb 1986	281 mm1961 · driest 4 mm in 1993	98
March	27.8°C26 Mar 2025	-7.2°C5 Mar 1955	74 mm31 Mar 1931	237 mm2012 · driest 14 mm in 1965	99
April	32.2°C18 Apr 2016	-4.4°C4 Apr 1936	62 mm5 Apr 1991	183 mm1996 · driest 13 mm in 1951	99
May	37.2°C23 May 2001	-2.8°C8 May 1930	38 mm4 May 1926	178 mm2010 · driest 3 mm in 2018	98
June	41.7°C27 Jun 2021	-1.1°C4 Jun 2000	48 mm7 Jun 1936	148 mm1936 · driest 3 mm in 1945	98
July	40.6°C29 Jul 2009	0.0°C25 Jul 1930	56 mm16 Jul 1978	82 mm1983 · driest 0 mm in 1941	98
August	42.2°C10 Aug 1981	1.7°C16 Aug 1935	50 mm22 Aug 2004	149 mm2004 · driest 0 mm in 2022	99
September	40.0°C5 Sep 1944	-1.7°C26 Sep 1926	63 mm14 Sep 1935	128 mm1927 · driest 2 mm in 1975	98
October	32.2°C2 Oct 1987	-5.0°C30 Oct 2019	66 mm3 Oct 1927	239 mm1955 · driest 7 mm in 1987	99
November	24.4°C3 Nov 2010	-13.3°C15 Nov 1955	103 mm6 Nov 2006	420 mm2006 · driest 13 mm in 1936	99
December	17.8°C2 Dec 1934	-15.6°C9 Dec 1972	93 mm2 Dec 1977	511 mm1933 · driest 57 mm in 1976	100

Typical days per month at LONGVIEW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	9	6
February	0	0	9	3
March	<1	0	5	4
April	2	<1	2	3
May	6	1	<1	3
June	9	2	<1	1
July	18	6	0	<1
August	20	7	0	<1
September	12	3	0	2
October	1	0	<1	4
November	0	0	5	6
December	0	0	9	7

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 90); on 2011–2025 it is June (89). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LONGVIEW’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%	57%	18%	74%	4.7–10.0°C
February	<1%	53%	14%	71%	8.0–13.2°C
March	6%	54%	12%	74%	10.8–15.3°C
April	20%	46%	8%	61%	14.0–18.4°C
May	40%	34%	6%	43%	17.6–22.1°C
June	59%	26%	5%	31%	20.5–24.4°C
July	86%	11%	2%	8%	23.5–28.0°C
August	84%	14%	3%	14%	23.7–27.7°C
September	66%	24%	6%	30%	20.8–25.6°C
October	24%	40%	12%	57%	15.9–19.3°C
November	<1%	58%	20%	77%	9.5–12.9°C
December	0%	59%	21%	78%	5.9–9.6°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.

1926Each stripe is one year’s mean temperature against the 88-year average. Warmest: 2015. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5799571
NOAA station: USC00454769 · LONGVIEW
Station distance: 5.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 46.15°, 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 LONGVIEW is what differs

Longview→West Side Highway→Longview Heights→West Longview→Kalama→Castle Rock→

Or put two places side by side: Kelso vs Longview

Best time to visitKelso.

July

July

June

The whole year,without the guesswork.

Kelso runs +1.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Kelso.

The whole year,
without the guesswork.

Kelso runs +1.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.