United States · 1991–2020

Best time to visit
Arvada.

September leads for comfortable weather in Arvada: typically 26.2°C by day, 7.4°C at night, with 35 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.2°C

Typical low7.4°C

Rain in September35 mm

Comfort

September

September · June · August

77climate match

Beach

August

August · July · June

68climate match

Outdoors

October

October · May · September

80climate match

The weakest month is December, scoring 5 against September’s 77 — days reach only 8.2°C, 16° below the 24°C the score treats as ideal, and nights drop to -8.2°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

88.7° / -7.9°

Feb

119.4° / -7.2°

Mar

3113.8° / -3.2°

Apr

4416.9° / 0.4°

May

6821.9° / 5.8°

Jun

7428.2° / 10.5°

Jul

6831.5° / 13.7°

Aug

7230.2° / 12.3°

Sep

7726.2° / 7.4°

Oct

5718.9° / 0.9°

Nov

2712.8° / -4.2°

Dec

58.2° / -8.2°

Monthly climate evidence for Arvada — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.7°C	-7.9°C	16 mm	3.7	9 h 38	8	Strong coverage
February	9.4°C	-7.2°C	20 mm	4.2	10 h 38	11	Strong coverage
March	13.8°C	-3.2°C	38 mm	5.2	11 h 49	31	Strong coverage
April	16.9°C	0.4°C	57 mm	6.9	13 h 12	44	Strong coverage
May	21.9°C	5.8°C	68 mm	7.7	14 h 21	68	Strong coverage
June	28.2°C	10.5°C	42 mm	6	14 h 58	74	Strong coverage
July	31.5°C	13.7°C	48 mm	6.1	14 h 44	68	Strong coverage
August	30.2°C	12.3°C	42 mm	5.5	13 h 44	72	Strong coverage
September	26.2°C	7.4°C	35 mm	5.1	12 h 24	77	Strong coverage
October	18.9°C	0.9°C	31 mm	4.4	11 h 05	57	Strong coverage
November	12.8°C	-4.2°C	24 mm	4.2	9 h 56	27	Strong coverage
December	8.2°C	-8.2°C	16 mm	3.8	9 h 22	5	Strong coverage

Records at WHEAT RIDGE 2, 1981–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.6°C26 Jan 1982	-29.4°C18 Jan 1984	18 mm19 Jan 1990	35 mm2019 · driest 2 mm in 2020	43
February	26.1°C11 Feb 2017	-30.6°C5 Feb 1989	35 mm4 Feb 2024	64 mm2024 · driest 0 mm in 1992	45
March	31.7°C22 Mar 2026	-22.2°C2 Mar 2002	73 mm18 Mar 2003	134 mm1983 · driest 1 mm in 2012	44
April	33.3°C30 Apr 1992	-15.6°C12 Apr 1997	57 mm24 Apr 1997	170 mm1999 · driest 2 mm in 2002	44
May	36.1°C30 May 2003	-7.2°C2 May 2013	65 mm12 May 2023	158 mm2015 · driest 15 mm in 2006	44
June	39.4°C26 Jun 2012	0.6°C6 Jun 1998	92 mm3 Jun 1981	123 mm2023 · driest 5 mm in 1990	44
July	40.0°C21 Jul 2026	4.4°C13 Jul 1987	79 mm14 Jul 2013	124 mm2013 · driest 4 mm in 2008	44
August	38.9°C16 Aug 2002	2.8°C27 Aug 1992	62 mm24 Aug 1992	111 mm2004 · driest 3 mm in 2020	43
September	37.8°C13 Sep 1990	-10.0°C29 Sep 1985	75 mm10 Sep 2013	194 mm2013 · driest 0 mm in 1992	43
October	34.4°C16 Oct 1991	-16.7°C29 Oct 1991	69 mm4 Oct 1984	156 mm1984 · driest 3 mm in 1988	43
November	28.9°C25 Nov 1990	-22.2°C13 Nov 2014	24 mm5 Nov 2015	78 mm1983 · driest 1 mm in 2025	44
December	25.0°C23 Dec 2025	-31.1°C22 Dec 1990	48 mm21 Dec 2006	81 mm2006 · driest 0 mm in 2018	44

Typical days per month at WHEAT RIDGE 2, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	6
February	0	0	27	<1	6
March	1	0	25	1	6
April	4	<1	14	2	5
May	12	2	2	2	1
June	23	13	0	1	0
July	30	22	0	2	0
August	28	20	0	1	0
September	20	10	1	1	<1
October	8	1	13	1	2
November	1	0	26	<1	5
December	0	0	30	<1	6

How often, not how much — every day in WHEAT RIDGE 2’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	3%	12%	<1%	6%	5.5–10.7°C
February	7%	15%	2%	9%	5.8–13.5°C
March	21%	17%	4%	13%	10.9–17.1°C
April	38%	22%	6%	22%	14.0–19.9°C
May	59%	26%	7%	28%	20.1–24.1°C
June	78%	20%	5%	18%	25.4–30.7°C
July	81%	20%	5%	19%	30.0–33.1°C
August	81%	19%	4%	15%	28.7–32.0°C
September	78%	16%	4%	13%	24.0–28.6°C
October	52%	14%	4%	7%	15.6–22.0°C
November	20%	13%	3%	7%	9.9–15.9°C
December	4%	12%	1%	9%	6.1–10.6°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.

1982Each stripe is one year’s mean temperature against the 38-year average. Warmest: 2012. Coolest: 1984.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5412199
NOAA station: USC00058995 · WHEAT RIDGE 2
Station distance: 3.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 39.80°, 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 WHEAT RIDGE 2 is what differs

Wheat Ridge→Berkley→Mountain View→Lakeside→Mount Olivet→Crestmont Heights→

Or put two places side by side: Arvada vs Wheat Ridge

Best time to visitArvada.