United States · 1991–2020

Best time to visit
Riverton.

September leads for comfortable weather in Riverton: typically 26.5°C by day, 13°C at night, with 73 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.5°C

Typical low13°C

Rain in September73 mm

Comfort

September

September · May · August

80climate match

Beach

August

August · July · June

77climate match

Outdoors

October

October · April · September

79climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 1.9°C, 22° 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

51.9° / -7°

Feb

54.8° / -4.8°

Mar

2311.5° / 0.5°

Apr

5118.4° / 6°

May

7724° / 12.2°

Jun

6428.7° / 17.2°

Jul

6030.2° / 18.8°

Aug

6729.5° / 17.7°

Sep

8026.5° / 13°

Oct

5919.4° / 6.8°

Nov

2511.3° / 1°

Dec

54.6° / -4°

Monthly climate evidence for Riverton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.9°C	-7°C	51 mm	6.8	9 h 38	5	Strong coverage
February	4.8°C	-4.8°C	49 mm	6.3	10 h 38	5	Strong coverage
March	11.5°C	0.5°C	70 mm	8.2	11 h 49	23	Strong coverage
April	18.4°C	6°C	101 mm	9.4	13 h 12	51	Strong coverage
May	24°C	12.2°C	115 mm	9.9	14 h 21	77	Strong coverage
June	28.7°C	17.2°C	117 mm	8.5	14 h 59	64	Strong coverage
July	30.2°C	18.8°C	98 mm	6.8	14 h 44	60	Strong coverage
August	29.5°C	17.7°C	85 mm	6.3	13 h 44	67	Strong coverage
September	26.5°C	13°C	73 mm	6	12 h 24	80	Strong coverage
October	19.4°C	6.8°C	83 mm	7.3	11 h 05	59	Strong coverage
November	11.3°C	1°C	69 mm	6.8	9 h 55	25	Strong coverage
December	4.6°C	-4°C	55 mm	6.7	9 h 21	5	Strong coverage

What has changed

Riverton runs +1.3°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

+1.8

Feb

+2.1

Mar

+2.4

Apr

+0.9

May

+0.9

Jun

+0.6

Jul

0.0

Aug

+0.5

Sep

+1.5

Oct

+0.8

Nov

+0.7

Dec

+3.2

September daytime highs, 2011–2025. Last recorded: 29.0°C.

Records at SPRINGFIELD ABRAHAM LINCOLN CA, 1901–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C23 Jan 1909	-29.4°C5 Jan 1999	61 mm7 Jan 1937	157 mm1907 · driest 1 mm in 1986	126
February	26.7°C27 Feb 2024	-31.1°C13 Feb 1905	60 mm22 Feb 1990	124 mm1990 · driest 8 mm in 1907	126
March	33.3°C26 Mar 2026	-24.4°C5 Mar 1960	83 mm31 Mar 1933	201 mm1973 · driest 5 mm in 1910	126
April	32.2°C25 Apr 1986	-8.8°C2 Apr 2018	113 mm11 Apr 1979	252 mm1964 · driest 19 mm in 1971	126
May	38.3°C31 May 1934	-2.2°C10 May 1966	91 mm26 May 1915	277 mm2013 · driest 8 mm in 1934	126
June	40.0°C27 Jun 1934	3.9°C1 Jun 2003	131 mm4 Jun 1917	274 mm1917 · driest 6 mm in 1959	126
July	44.4°C14 Jul 1954	8.9°C14 Jul 1967	110 mm27 Jul 1981	273 mm1981 · driest 8 mm in 1916	126
August	42.2°C9 Aug 1934	6.1°C29 Aug 1986	142 mm12 Aug 2016	275 mm2016 · driest 3 mm in 1943	125
September	38.9°C1 Sep 2011	0.0°C23 Sep 1995	138 mm8 Sep 1926	385 mm1926 · driest 0 mm in 1979	125
October	33.9°C3 Oct 1954	-10.6°C30 Oct 1925	120 mm4 Oct 1941	340 mm1941 · driest 3 mm in 1904	125
November	28.3°C1 Nov 1950	-19.4°C30 Nov 1964	72 mm4 Nov 2024	176 mm1985 · driest 1 mm in 1904	125
December	23.3°C28 Dec 1984	-29.4°C23 Dec 1989	119 mm2 Dec 1982	227 mm1982 · driest 4 mm in 1955	125

Typical days per month at SPRINGFIELD ABRAHAM LINCOLN CA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	1	5
February	0	0	23	2	4
March	1	0	16	2	2
April	5	<1	4	4	<1
May	15	5	<1	4	0
June	26	13	0	4	0
July	29	18	0	3	0
August	29	14	0	3	0
September	20	8	<1	2	0
October	7	1	4	3	<1
November	<1	0	14	3	1
December	0	0	24	2	4

How often, not how much — every day in SPRINGFIELD ABRAHAM LINCOLN CA’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%	21%	5%	19%	-2.3–5.4°C
February	1%	21%	6%	19%	-0.6–7.9°C
March	10%	27%	8%	31%	6.5–14.4°C
April	27%	30%	10%	37%	14.9–20.7°C
May	55%	30%	11%	37%	20.9–26.5°C
June	72%	27%	11%	30%	26.2–30.9°C
July	78%	22%	9%	21%	28.5–33.1°C
August	79%	21%	9%	19%	27.7–32.0°C
September	71%	22%	8%	22%	23.8–28.7°C
October	41%	21%	8%	20%	17.2–22.3°C
November	8%	21%	7%	20%	7.9–13.6°C
December	<1%	22%	6%	21%	0.1–7.2°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.

1901Each stripe is one year’s mean temperature against the 125-year average. Warmest: 1931. Coolest: 1917.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4248205
NOAA station: USW00093822 · SPRINGFIELD ABRAHAM LINCOLN CA
Station distance: 12.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 39.84°, 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 SPRINGFIELD ABRAHAM LINCOLN CA is what differs

Sherman→Williamsville→Spaulding→Dawson→Buffalo→Cantrall→

Or put two places side by side: Riverton vs Sherman

Best time to visitRiverton.