United States · 1991–2020

Best time to visit
Walnut Grove.

September leads for comfortable weather in Walnut Grove: typically 28°C by day, 15.5°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high28°C

Typical low15.5°C

Rain in September110 mm

Comfort

September

September · May · October

72climate match

Beach

August

August · June · July

71climate match

Outdoors

October

October · April · November

76climate match

The weakest month is January, scoring 5 against September’s 72 — days reach only 7.4°C, 17° 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

57.4° / -2.8°

Feb

59.2° / -1.4°

Mar

3115° / 3.2°

Apr

5620.9° / 8.2°

May

6925.1° / 13.6°

Jun

5929.6° / 18.3°

Jul

4731° / 20°

Aug

5531° / 19.1°

Sep

7228° / 15.5°

Oct

6821.6° / 9.1°

Nov

3515.1° / 2.9°

Dec

59.4° / -0.3°

Monthly climate evidence for Walnut Grove — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7.4°C	-2.8°C	107 mm	9.2	9 h 55	5	Good coverage
February	9.2°C	-1.4°C	121 mm	9.6	10 h 48	5	Good coverage
March	15°C	3.2°C	119 mm	10.3	11 h 51	31	Good coverage
April	20.9°C	8.2°C	148 mm	9.5	13 h 04	56	Good coverage
May	25.1°C	13.6°C	161 mm	10.7	14 h 05	69	Good coverage
June	29.6°C	18.3°C	113 mm	9.1	14 h 38	59	Good coverage
July	31°C	20°C	144 mm	9.2	14 h 25	47	Good coverage
August	31°C	19.1°C	107 mm	7.6	13 h 33	55	Good coverage
September	28°C	15.5°C	110 mm	6.8	12 h 22	72	Good coverage
October	21.6°C	9.1°C	107 mm	7.3	11 h 12	68	Good coverage
November	15.1°C	2.9°C	103 mm	8.3	10 h 10	35	Good coverage
December	9.4°C	-0.3°C	135 mm	10.2	9 h 41	5	Good coverage

Records at WHITE HOUSE, 2001–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C2 Jan 2022	-23.3°C17 Jan 2024	84 mm28 Jan 2009	179 mm2006 · driest 55 mm in 2015	25
February	26.7°C24 Feb 2023	-18.3°C19 Feb 2015	74 mm16 Feb 2025	309 mm2019 · driest 34 mm in 2017	25
March	31.1°C23 Mar 2026	-16.1°C6 Mar 2015	124 mm16 Mar 2025	266 mm2021 · driest 57 mm in 2007	25
April	31.1°C10 Apr 2011	-6.1°C8 Apr 2007	104 mm3 Apr 2025	265 mm2011 · driest 47 mm in 2016	25
May	33.3°C31 May 2011	0.0°C9 May 2020	155 mm9 May 2024	410 mm2010 · driest 28 mm in 2005	25
June	40.0°C30 Jun 2012	7.2°C2 Jun 2012	104 mm30 Jun 2024	260 mm2019 · driest 0 mm in 2022	25
July	40.0°C1 Jul 2012	11.1°C15 Jul 2014	120 mm7 Jul 2016	263 mm2013 · driest 39 mm in 2025	25
August	41.1°C17 Aug 2007	8.9°C16 Aug 2004	105 mm18 Aug 2010	212 mm2005 · driest 8 mm in 2024	24
September	37.2°C3 Sep 2011	4.4°C20 Sep 2004	130 mm1 Sep 2017	260 mm2009 · driest 6 mm in 2019	24
October	35.6°C3 Oct 2019	-3.3°C26 Oct 2013	106 mm7 Oct 2019	249 mm2019 · driest 0 mm in 2024	24
November	29.4°C2 Nov 2016	-12.8°C13 Nov 2019	70 mm6 Nov 2018	197 mm2001 · driest 24 mm in 2009	25
December	23.9°C12 Dec 2007	-19.4°C23 Dec 2022	84 mm9 Dec 2009	228 mm2019 · driest 62 mm in 2010	25

Typical days per month at WHITE HOUSE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	21	4	2
February	<1	0	18	4	3
March	2	0	10	4	1
April	8	<1	2	5	<1
May	18	4	<1	5	0
June	27	15	0	4	0
July	30	22	0	4	0
August	30	21	0	3	0
September	23	11	0	3	0
October	10	2	1	3	0
November	1	0	10	3	<1
December	0	0	17	4	<1

How often, not how much — every day in WHITE HOUSE’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	<1%	30%	12%	39%	4.5–10.7°C
February	5%	33%	14%	43%	5.8–13.6°C
March	21%	31%	13%	37%	12.4–19.4°C
April	43%	31%	14%	41%	19.3–23.1°C
May	57%	34%	15%	48%	23.6–27.2°C
June	71%	29%	13%	32%	28.4–30.8°C
July	70%	30%	14%	32%	29.0–32.7°C
August	75%	25%	11%	25%	28.7–32.6°C
September	75%	23%	10%	21%	26.1–30.1°C
October	53%	22%	9%	24%	19.6–24.2°C
November	17%	27%	11%	34%	12.2–17.4°C
December	2%	32%	14%	38%	7.5–12.1°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.

2002Each stripe is one year’s mean temperature against the 24-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4665608
NOAA station: USC00409709 · WHITE HOUSE
Station distance: 4.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 36.48°, 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 WHITE HOUSE is what differs

White House→Cross Plains→Cottontown→Baggettsville→Calistia→Cherry Mount (historical)→

Or put two places side by side: Walnut Grove vs White House

Best time to visitWalnut Grove.