United States · 1991–2020

Best time to visit
Broadmoor Subdivision.

September leads for comfortable weather in Broadmoor Subdivision: typically 23.5°C by day, 10.6°C at night, with 38 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low10.6°C

Rain in September38 mm

Comfort

September

September · June · August

88climate match

Beach

July

July · August · September

76climate match

Outdoors

September

September · October · May

86climate match

The weakest month is January, scoring 5 against September’s 88 — days reach only 2.8°C, 21° below the 24°C the score treats as ideal, and nights drop to -8.6°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

52.8° / -8.6°

Feb

53.1° / -8.1°

Mar

138.3° / -3.7°

Apr

3213° / 1.2°

May

4918° / 6.8°

Jun

8024.8° / 12.6°

Jul

6929.7° / 16.7°

Aug

7828.6° / 15.6°

Sep

8823.5° / 10.6°

Oct

4715° / 3.3°

Nov

188.7° / -2.6°

Dec

53° / -7.6°

Monthly climate evidence for Broadmoor Subdivision — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.8°C	-8.6°C	8 mm	2.7	9 h 13	5	Strong coverage
February	3.1°C	-8.1°C	13 mm	3.2	10 h 23	5	Strong coverage
March	8.3°C	-3.7°C	24 mm	4.8	11 h 47	13	Strong coverage
April	13°C	1.2°C	55 mm	7.8	13 h 23	32	Strong coverage
May	18°C	6.8°C	105 mm	10.2	14 h 43	49	Good coverage
June	24.8°C	12.6°C	84 mm	10.1	15 h 28	80	Good coverage
July	29.7°C	16.7°C	64 mm	8.1	15 h 10	69	Strong coverage
August	28.6°C	15.6°C	57 mm	6.5	14 h 00	78	Strong coverage
September	23.5°C	10.6°C	38 mm	4.8	12 h 27	88	Strong coverage
October	15°C	3.3°C	37 mm	5.1	10 h 55	47	Strong coverage
November	8.7°C	-2.6°C	12 mm	2.3	9 h 34	18	Strong coverage
December	3°C	-7.6°C	9 mm	2.4	8 h 54	5	Strong coverage

Records at RAPID CITY WFO, 1996–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C8 Jan 2002	-30.6°C13 Jan 2024	8 mm3 Jan 1996	24 mm2023 · driest 2 mm in 2002	31
February	22.8°C4 Feb 2005	-30.6°C2 Feb 1996	18 mm3 Feb 1997	39 mm2020 · driest 1 mm in 1999	31
March	29.4°C21 Mar 2026	-26.7°C2 Mar 2014	25 mm16 Mar 2018	57 mm1998 · driest 2 mm in 2012	31
April	32.8°C22 Apr 2026	-15.6°C3 Apr 2020	41 mm6 Apr 2024	120 mm2000 · driest 15 mm in 2004	31
May	35.0°C11 May 2025	-3.9°C2 May 2019	77 mm22 May 2008	247 mm2008 · driest 36 mm in 2017	30
June	41.1°C26 Jun 2012	-0.6°C3 Jun 1998	59 mm2 Jun 1997	185 mm2018 · driest 15 mm in 2016	30
July	43.3°C25 Jul 2026	8.3°C1 Jul 2001	56 mm24 Jul 2022	165 mm2019 · driest 11 mm in 2003	31
August	41.1°C29 Aug 2012	7.2°C17 Aug 2002	51 mm13 Aug 1997	121 mm2014 · driest 10 mm in 2012	30
September	38.9°C5 Sep 2020	-1.7°C23 Sep 2000	66 mm29 Sep 2014	123 mm2014 · driest 1 mm in 2012	30
October	34.4°C2 Oct 2011	-15.6°C26 Oct 2020	67 mm12 Oct 2023	149 mm1998 · driest 2 mm in 1999	30
November	28.3°C7 Nov 1999	-22.2°C23 Nov 2010	24 mm30 Nov 2019	42 mm2019 · driest 1 mm in 2004	30
December	23.3°C2 Dec 2021	-28.3°C15 Dec 2008	15 mm1 Dec 2018	31 mm2018 · driest 1 mm in 2001	30

Typical days per month at RAPID CITY WFO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	0	7
February	0	0	25	<1	7
March	<1	0	23	<1	6
April	2	<1	12	2	4
May	5	<1	2	3	<1
June	15	6	<1	3	<1
July	27	15	0	2	0
August	25	13	0	2	0
September	14	5	<1	1	<1
October	3	<1	8	<1	2
November	<1	0	20	<1	4
December	0	0	27	<1	6

How often, not how much — every day in RAPID CITY WFO’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%	9%	0%	3%	0.1–5.6°C
February	2%	12%	<1%	7%	-2.7–7.8°C
March	9%	16%	2%	17%	2.5–13.1°C
April	17%	26%	6%	30%	10.4–15.3°C
May	33%	32%	8%	46%	15.7–20.4°C
June	61%	32%	9%	40%	22.4–27.9°C
July	73%	27%	6%	29%	27.3–32.9°C
August	79%	21%	5%	16%	26.8–30.7°C
September	69%	17%	3%	14%	21.8–26.7°C
October	29%	16%	3%	10%	11.3–18.4°C
November	9%	7%	<1%	2%	4.8–12.9°C
December	1%	8%	<1%	2%	-1.1–7.6°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.

1996Each stripe is one year’s mean temperature against the 28-year average. Warmest: 2012. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5763060
NOAA station: USC00396948 · RAPID CITY WFO
Station distance: 6.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 44.04°, 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 RAPID CITY WFO is what differs

Rapid City→Rapid Valley→Colonial Pine Hills→Ashland Heights→Arrowhead Estates→Clarkson Addition→

Or put two places side by side: Broadmoor Subdivision vs Rapid City

Best time to visitBroadmoor Subdivision.

September

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Broadmoor Subdivision.

The whole year,
without the guesswork.

Nearby, measured,
and named.