United States · 1991–2020

Best time to visit
Lapwai.

June leads for comfortable weather in Lapwai: typically 25.9°C by day, 12.1°C at night, with 32 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.9°C

Typical low12.1°C

Rain in June32 mm

Comfort

June

June · September · May

86climate match

Beach

July

July · August · September

75climate match

Outdoors

May

May · September · October

85climate match

The weakest month is December, scoring 5 against June’s 86 — days reach only 4.7°C, 19° 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

75.5° / -1.1°

Feb

188.2° / -0.3°

Mar

3512.7° / 2°

Apr

5316.7° / 4.7°

May

7722.1° / 8.7°

Jun

8625.9° / 12.1°

Jul

7032.5° / 15.9°

Aug

7232.1° / 15.5°

Sep

8626.2° / 11.1°

Oct

5717° / 5.4°

Nov

229.1° / 1.2°

Dec

54.7° / -1.6°

Monthly climate evidence for Lapwai — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	-1.1°C	29 mm	6.7	8 h 58	7	Strong coverage
February	8.2°C	-0.3°C	26 mm	5.9	10 h 15	18	Strong coverage
March	12.7°C	2°C	33 mm	7.8	11 h 45	35	Strong coverage
April	16.7°C	4.7°C	37 mm	8.1	13 h 29	53	Strong coverage
May	22.1°C	8.7°C	43 mm	7.6	14 h 58	77	Strong coverage
June	25.9°C	12.1°C	32 mm	6	15 h 47	86	Strong coverage
July	32.5°C	15.9°C	11 mm	2.2	15 h 28	70	Strong coverage
August	32.1°C	15.5°C	13 mm	2.3	14 h 10	72	Strong coverage
September	26.2°C	11.1°C	15 mm	3.2	12 h 29	86	Strong coverage
October	17°C	5.4°C	27 mm	6.3	10 h 49	57	Strong coverage
November	9.1°C	1.2°C	31 mm	7.4	9 h 20	22	Strong coverage
December	4.7°C	-1.6°C	29 mm	6.8	8 h 36	5	Strong coverage

What has changed

Lapwai 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

+1.3

Feb

-0.6

Mar

+0.6

Apr

+0.4

May

+1.4

Jun

+1.0

Jul

+2.2

Aug

+1.8

Sep

+1.8

Oct

+0.5

Nov

+0.6

Dec

+0.9

June daytime highs, 2011–2025. Last recorded: 29.5°C.

Records at LEWISTON AP, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.9°C9 Jan 1953	-30.0°C31 Jan 1950	29 mm15 Jan 1956	90 mm1970 · driest 3 mm in 2007	79
February	22.2°C24 Feb 1986	-26.1°C2 Feb 1950	32 mm6 Feb 2020	87 mm2019 · driest 4 mm in 1988	79
March	26.7°C26 Mar 2025	-16.7°C5 Mar 1955	22 mm7 Mar 2003	92 mm2012 · driest 6 mm in 1969	79
April	36.1°C24 Apr 1977	-6.7°C19 Apr 1966	23 mm1 Apr 1978	84 mm1978 · driest 1 mm in 1956	79
May	37.8°C29 May 1983	-5.0°C1 May 1954	41 mm8 May 1948	122 mm1948 · driest 4 mm in 2021	79
June	46.1°C29 Jun 2021	1.1°C1 Jun 1951	42 mm15 Jun 1956	119 mm1950 · driest 2 mm in 2025	79
July	43.9°C21 Jul 2024	5.0°C2 Jul 1955	46 mm10 Jul 1998	66 mm1987 · driest 0 mm in 1953	79
August	46.1°C4 Aug 1961	5.0°C24 Aug 1992	35 mm1 Aug 1960	75 mm1989 · driest 0 mm in 2012	78
September	39.4°C2 Sep 1950	-2.2°C17 Sep 1965	44 mm14 Sep 1955	63 mm2000 · driest 0 mm in 1975	78
October	31.7°C2 Oct 1975	-9.4°C31 Oct 2002	28 mm31 Oct 1973	71 mm1950 · driest 0 mm in 1978	78
November	25.0°C12 Nov 1999	-19.4°C15 Nov 1955	31 mm18 Nov 1996	71 mm1973 · driest 6 mm in 1976	78
December	18.9°C11 Dec 2014	-30.0°C30 Dec 1968	34 mm29 Dec 2017	83 mm1964 · driest 4 mm in 1965	78

Typical days per month at LEWISTON AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	18	<1	2
February	0	0	15	<1	3
March	0	0	9	<1	<1
April	2	<1	2	<1	0
May	10	3	0	1	0
June	18	7	0	<1	0
July	29	23	0	<1	0
August	29	22	0	<1	0
September	18	8	0	<1	0
October	2	<1	3	<1	0
November	0	0	12	<1	1
December	0	0	20	<1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 88); on 2011–2025 it is May (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LEWISTON AP’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%	22%	2%	24%	0.4–7.6°C
February	<1%	22%	1%	23%	5.1–10.3°C
March	4%	23%	1%	25%	9.9–14.5°C
April	24%	23%	2%	25%	14.5–19.5°C
May	54%	23%	3%	26%	19.0–24.1°C
June	76%	19%	3%	17%	23.6–29.1°C
July	91%	8%	1%	4%	29.7–35.2°C
August	91%	9%	1%	6%	28.5–33.8°C
September	79%	13%	1%	11%	22.5–28.6°C
October	28%	18%	2%	17%	15.0–19.6°C
November	<1%	24%	2%	26%	6.6–11.2°C
December	0%	24%	1%	25%	2.5–7.4°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.

1948Each stripe is one year’s mean temperature against the 78-year average. Warmest: 2015. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5598185
NOAA station: USW00024149 · LEWISTON AP
Station distance: 16.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 46.40°, 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 LEWISTON AP is what differs

Lewiston→Lewiston Orchards→Clarkston→Clarkston Heights-Vineland→West Clarkston-Highland→Asotin→

Or put two places side by side: Lapwai vs Lewiston

Best time to visitLapwai.

June

July

May

The whole year,without the guesswork.

Lapwai runs +1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Lapwai.

The whole year,
without the guesswork.

Lapwai runs +1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.