United States · 1991–2020

Best time to visit
Arrowhead Springs.

September leads for comfortable weather in Arrowhead Springs: typically 24°C by day, 5.8°C at night, with 28 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24°C

Typical low5.8°C

Rain in September28 mm

Comfort

September

September · June · August

82climate match

Beach

July

July · August · June

71climate match

Outdoors

May

May · September · June

80climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only 1.1°C, 23° below the 24°C the score treats as ideal, and nights drop to -10.5°C.

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

51.1° / -10.5°

Feb

52.7° / -9°

Mar

179.4° / -4.2°

Apr

3714° / -1.1°

May

5919.2° / 3.3°

Jun

8125.7° / 8°

Jul

7330.5° / 12.1°

Aug

7529.1° / 10.9°

Sep

8224° / 5.8°

Oct

4716.1° / 0.5°

Nov

97.6° / -5.5°

Dec

50.7° / -10.2°

Monthly climate evidence for Arrowhead Springs — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.1°C	-10.5°C	11 mm	3.1	9 h 29	5	Good coverage
February	2.7°C	-9°C	12 mm	3.2	10 h 32	5	Good coverage
March	9.4°C	-4.2°C	16 mm	3.1	11 h 48	17	Good coverage
April	14°C	-1.1°C	27 mm	4.2	13 h 16	37	Good coverage
May	19.2°C	3.3°C	42 mm	6.7	14 h 30	59	Good coverage
June	25.7°C	8°C	20 mm	3.8	15 h 10	81	Good coverage
July	30.5°C	12.1°C	14 mm	2.6	14 h 54	73	Good coverage
August	29.1°C	10.9°C	16 mm	3.4	13 h 50	75	Good coverage
September	24°C	5.8°C	28 mm	4.3	12 h 25	82	Good coverage
October	16.1°C	0.5°C	23 mm	3.9	11 h 01	47	Good coverage
November	7.6°C	-5.5°C	14 mm	3.1	9 h 47	9	Good coverage
December	0.7°C	-10.2°C	15 mm	3.7	9 h 11	5	Good coverage

Records at ROCK SPRINGS FIRE DEPT, 2003–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.1°C26 Jan 2015	-36.1°C6 Jan 2017	12 mm26 Jan 2009	50 mm2017 · driest 0 mm in 2010	24
February	15.6°C1 Feb 2003	-31.1°C2 Feb 2011	20 mm23 Feb 2017	47 mm2017 · driest 3 mm in 2022	24
March	26.7°C25 Mar 2026	-24.4°C10 Mar 2022	20 mm3 Mar 2026	49 mm2017 · driest 1 mm in 2004	23
April	27.2°C23 Apr 2012	-15.6°C7 Apr 2023	40 mm26 Apr 2016	106 mm2016 · driest 0 mm in 2008	24
May	31.1°C28 May 2003	-7.8°C3 May 2013	47 mm7 May 2016	87 mm2015 · driest 8 mm in 2014	24
June	35.0°C16 Jun 2021	0.0°C10 Jun 2019	25 mm24 Jun 2003	71 mm2003 · driest 0 mm in 2012	24
July	37.2°C13 Jul 2026	3.9°C1 Jul 2020	41 mm7 Jul 2015	61 mm2015 · driest 0 mm in 2018	24
August	35.0°C20 Aug 2025	1.1°C31 Aug 2005	19 mm18 Aug 2005	42 mm2023 · driest 0 mm in 2012	22
September	34.4°C7 Sep 2022	-4.4°C8 Sep 2020	34 mm28 Sep 2014	69 mm2013 · driest 0 mm in 2018	22
October	29.4°C1 Oct 2010	-21.7°C30 Oct 2019	28 mm4 Oct 2018	60 mm2013 · driest 3 mm in 2017	23
November	21.1°C6 Nov 2010	-23.3°C13 Nov 2014	21 mm1 Nov 2011	38 mm2019 · driest 2 mm in 2008	23
December	16.1°C2 Dec 2021	-32.2°C31 Dec 2014	25 mm4 Dec 2011	43 mm2010 · driest 4 mm in 2025	22

Typical days per month at ROCK SPRINGS FIRE DEPT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	0	0	27	<1	3
March	0	0	26	<1	3
April	<1	0	19	<1	<1
May	5	<1	6	1	<1
June	19	6	<1	<1	0
July	29	20	0	<1	0
August	28	14	0	<1	0
September	15	2	2	<1	<1
October	1	0	15	<1	<1
November	0	0	26	<1	3
December	0	0	30	<1	5

How often, not how much — every day in ROCK SPRINGS FIRE DEPT’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%	10%	<1%	6%	-2.8–4.9°C
February	0%	11%	<1%	4%	-0.1–5.0°C
March	5%	10%	2%	5%	7.1–12.3°C
April	14%	13%	2%	9%	11.5–15.2°C
May	46%	20%	4%	15%	16.5–21.1°C
June	81%	13%	1%	10%	23.4–28.6°C
July	92%	8%	1%	3%	29.2–31.9°C
August	88%	12%	1%	9%	27.9–30.1°C
September	76%	14%	3%	8%	22.6–26.3°C
October	32%	13%	2%	8%	13.5–19.2°C
November	<1%	10%	1%	3%	5.0–10.0°C
December	0%	12%	<1%	4%	-0.8–4.2°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5817421
NOAA station: USC00487847 · ROCK SPRINGS FIRE DEPT
Station distance: 10.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 41.51°, 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 ROCK SPRINGS FIRE DEPT is what differs

Rock Springs→North Rock Springs→Clearview Acres→Reliance→Purple Sage→Blairtown→

Or put two places side by side: Arrowhead Springs vs Rock Springs

Best time to visitArrowhead Springs.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Arrowhead Springs.

The whole year,
without the guesswork.

Nearby, measured,
and named.