United States · 1991–2020

Best time to visit
Spring Valley.

August leads for comfortable weather in Spring Valley: typically 25.3°C by day, 13.7°C at night, with 117 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25.3°C

Typical low13.7°C

Rain in August117 mm

Comfort

August

August · July · June

77climate match

Beach

July

July · August · June

56climate match

Outdoors

September

September · May · August

77climate match

The weakest month is January, scoring 5 against August’s 77 — days reach only -6°C, 30° 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

5-6° / -15°

Feb

5-3.6° / -13°

Mar

53.4° / -6.3°

Apr

2112.1° / 0.3°

May

5019.1° / 7.3°

Jun

7324.7° / 13.4°

Jul

7626.4° / 15.1°

Aug

7725.3° / 13.7°

Sep

6921.8° / 9.2°

Oct

3514.1° / 2.2°

Nov

54.8° / -4.5°

Dec

5-2.6° / -10.9°

Monthly climate evidence for Spring Valley — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-6°C	-15°C	24 mm	4.3	9 h 16	5	Strong coverage
February	-3.6°C	-13°C	20 mm	3.7	10 h 25	5	Strong coverage
March	3.4°C	-6.3°C	45 mm	5.5	11 h 47	5	Strong coverage
April	12.1°C	0.3°C	98 mm	8.5	13 h 22	21	Strong coverage
May	19.1°C	7.3°C	128 mm	10.8	14 h 41	50	Strong coverage
June	24.7°C	13.4°C	145 mm	10.2	15 h 25	73	Strong coverage
July	26.4°C	15.1°C	117 mm	8.2	15 h 08	76	Strong coverage
August	25.3°C	13.7°C	117 mm	8.3	13 h 59	77	Strong coverage
September	21.8°C	9.2°C	100 mm	7.2	12 h 27	69	Strong coverage
October	14.1°C	2.2°C	77 mm	7.1	10 h 56	35	Strong coverage
November	4.8°C	-4.5°C	45 mm	5	9 h 36	5	Strong coverage
December	-2.6°C	-10.9°C	31 mm	5.3	8 h 56	5	Strong coverage

What has changed

Spring Valley runs +0.0°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

+0.7

Feb

-0.8

Mar

+1.0

Apr

-1.2

May

-0.7

Jun

+0.2

Jul

-0.9

Aug

-0.7

Sep

+1.3

Oct

-0.3

Nov

+0.1

Dec

+1.8

August daytime highs, 2011–2025. Last recorded: 24.7°C.

Records at GRAND MEADOW, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.9°C26 Jan 1944	-38.9°C12 Jan 1912	45 mm25 Jan 1967	84 mm1967 · driest 0 mm in 1984	133
February	20.6°C27 Feb 2024	-37.8°C8 Feb 1899	42 mm28 Feb 1939	95 mm1915 · driest 0 mm in 1958	133
March	28.3°C26 Mar 1907	-35.0°C1 Mar 1962	51 mm23 Mar 1966	124 mm1951 · driest 0 mm in 1910	131
April	32.8°C22 Apr 1980	-17.2°C4 Apr 1995	115 mm24 Apr 1990	207 mm1999 · driest 7 mm in 2021	132
May	41.7°C31 May 1934	-6.7°C4 May 1907	119 mm18 May 2000	372 mm2013 · driest 23 mm in 1958	133
June	40.6°C27 Jun 1934	0.0°C4 Jun 1945	123 mm29 Jun 1942	367 mm1914 · driest 1 mm in 1910	134
July	41.7°C23 Jul 1901	2.8°C9 Jul 1895	185 mm2 Jul 2026	343 mm1999 · driest 16 mm in 1975	134
August	38.9°C17 Aug 1937	1.1°C30 Aug 1915	163 mm13 Aug 1911	339 mm1911 · driest 7 mm in 1971	132
September	37.8°C1 Sep 1913	-5.6°C30 Sep 1939	183 mm15 Sep 2004	292 mm1965 · driest 11 mm in 1953	132
October	33.3°C4 Oct 1997	-20.6°C30 Oct 1925	135 mm5 Oct 2013	230 mm2009 · driest 1 mm in 1952	133
November	25.6°C2 Nov 1952	-26.7°C27 Nov 1977	80 mm1 Nov 1991	199 mm1909 · driest 0 mm in 1903	133
December	17.8°C16 Dec 2021	-34.4°C13 Dec 1901	40 mm28 Dec 1982	92 mm2015 · driest 0 mm in 1943	133

Typical days per month at GRAND MEADOW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	7
February	0	0	27	<1	5
March	<1	0	26	2	4
April	1	<1	15	4	2
May	6	1	2	4	<1
June	16	3	0	5	0
July	22	5	0	4	0
August	18	3	0	4	0
September	9	2	1	3	0
October	2	<1	12	2	<1
November	0	0	24	2	3
December	0	0	30	<1	7

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 84); on 2011–2025 it is August (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in GRAND MEADOW’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%	15%	2%	11%	-9.6–-1.5°C
February	0%	14%	2%	9%	-7.1–0.7°C
March	2%	20%	5%	18%	-0.1–7.6°C
April	14%	27%	9%	32%	9.0–16.1°C
May	37%	33%	12%	42%	17.1–22.9°C
June	61%	32%	13%	39%	23.0–27.7°C
July	74%	25%	11%	24%	25.5–30.1°C
August	73%	25%	11%	25%	24.4–29.1°C
September	52%	25%	10%	28%	19.7–24.6°C
October	22%	20%	6%	18%	12.2–18.2°C
November	2%	18%	4%	16%	1.3–8.7°C
December	0%	16%	3%	10%	-6.7–0.8°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.

1894Each stripe is one year’s mean temperature against the 127-year average. Warmest: 1931. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5048378
NOAA station: USC00213290 · GRAND MEADOW
Station distance: 14.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 43.69°, 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 GRAND MEADOW is what differs

Grand Meadow→Le Roy→Adams→Racine→Dexter→Ostrander→

Or put two places side by side: Spring Valley vs Grand Meadow

Best time to visitSpring Valley.