United States · 1991–2020

Best time to visit
Fort Lupton.

September leads for comfortable weather in Fort Lupton: typically 26.7°C by day, 8.4°C at night, with 30 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.7°C

Typical low8.4°C

Rain in September30 mm

Comfort

September

September · June · August

79climate match

Beach

June

June · August · July

70climate match

Outdoors

October

October · May · September

82climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 7°C, 17° below the 24°C the score treats as ideal, and nights drop to -9°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

57° / -9°

Feb

67.9° / -7.7°

Mar

3213.5° / -3°

Apr

4917.4° / 0.9°

May

7122.2° / 5.9°

Jun

7429.1° / 11.2°

Jul

6932.4° / 14.3°

Aug

7231° / 13.4°

Sep

7926.7° / 8.4°

Oct

5919° / 1.6°

Nov

2611.9° / -4°

Dec

56.9° / -8.9°

Monthly climate evidence for Fort Lupton — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7°C	-9°C	11 mm	2.7	9 h 37	5	Strong coverage
February	7.9°C	-7.7°C	11 mm	2.9	10 h 37	6	Strong coverage
March	13.5°C	-3°C	25 mm	4.3	11 h 49	32	Strong coverage
April	17.4°C	0.9°C	45 mm	5.7	13 h 12	49	Strong coverage
May	22.2°C	5.9°C	57 mm	6.9	14 h 22	71	Strong coverage
June	29.1°C	11.2°C	36 mm	5	15 h 00	74	Strong coverage
July	32.4°C	14.3°C	39 mm	5.2	14 h 45	69	Strong coverage
August	31°C	13.4°C	40 mm	4.7	13 h 45	72	Strong coverage
September	26.7°C	8.4°C	30 mm	3.9	12 h 24	79	Strong coverage
October	19°C	1.6°C	24 mm	3.8	11 h 04	59	Strong coverage
November	11.9°C	-4°C	17 mm	3.4	9 h 54	26	Strong coverage
December	6.9°C	-8.9°C	9 mm	2.3	9 h 20	5	Strong coverage

What has changed

Fort Lupton runs +0.5°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

+0.9

Feb

-1.8

Mar

+0.5

Apr

-0.7

May

-1.2

Jun

+1.3

Jul

+1.0

Aug

+1.7

Sep

+1.8

Oct

-0.4

Nov

+1.7

Dec

+1.6

September daytime highs, 2011–2025. Last recorded: 27.1°C.

Records at BRIGHTON 3 SE, 1973–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C3 Jan 1997	-30.6°C16 Jan 2024	17 mm20 Jan 1990	31 mm1989 · driest 0 mm in 2003	53
February	26.7°C11 Feb 2017	-31.1°C5 Feb 1989	19 mm4 Feb 2024	38 mm2024 · driest 0 mm in 2009	53
March	32.2°C26 Mar 2026	-25.0°C2 Mar 2002	54 mm6 Mar 1990	133 mm1990 · driest 0 mm in 2012	53
April	32.8°C25 Apr 2012	-22.2°C2 Apr 1975	57 mm3 Apr 1986	140 mm1999 · driest 0 mm in 2022	53
May	37.2°C30 May 2003	-7.2°C2 May 2010	87 mm12 May 2023	161 mm2017 · driest 4 mm in 1974	49
June	40.0°C15 Jun 2006	1.1°C6 Jun 1998	61 mm7 Jun 1997	127 mm2005 · driest 1 mm in 2006	53
July	40.6°C27 Jul 2026	6.7°C2 Jul 1997	57 mm21 Jul 1977	121 mm1977 · driest 3 mm in 1994	53
August	39.4°C2 Aug 2008	5.0°C19 Aug 1978	51 mm2 Aug 2001	102 mm1992 · driest 0 mm in 2012	52
September	37.8°C6 Sep 2020	-7.2°C29 Sep 1985	60 mm12 Sep 2013	188 mm2013 · driest 0 mm in 2010	52
October	32.2°C1 Oct 2023	-17.8°C26 Oct 1997	31 mm10 Oct 2005	85 mm1984 · driest 1 mm in 1988	53
November	28.9°C3 Nov 2025	-25.6°C25 Nov 1993	30 mm14 Nov 1994	58 mm2015 · driest 2 mm in 2025	52
December	25.0°C23 Dec 2025	-32.2°C22 Dec 1990	35 mm24 Dec 1973	53 mm1973 · driest 0 mm in 1991	53

Typical days per month at BRIGHTON 3 SE, 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	4
March	1	0	24	<1	3
April	5	<1	13	1	2
May	12	4	2	2	<1
June	24	15	0	<1	0
July	28	23	0	1	0
August	28	21	0	1	0
September	20	10	<1	<1	<1
October	8	<1	10	<1	1
November	<1	0	25	<1	3
December	0	0	29	<1	4

How often, not how much — every day in BRIGHTON 3 SE’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%	<1%	2%	2.3–9.8°C
February	5%	11%	<1%	4%	4.2–12.4°C
March	20%	15%	2%	10%	10.3–16.7°C
April	41%	19%	5%	15%	14.3–20.4°C
May	60%	23%	6%	24%	19.6–24.8°C
June	81%	17%	4%	12%	26.0–31.7°C
July	82%	17%	3%	14%	30.4–34.3°C
August	84%	16%	3%	12%	29.0–32.7°C
September	81%	13%	3%	9%	24.3–29.2°C
October	53%	11%	2%	6%	16.1–21.4°C
November	17%	12%	1%	4%	8.0–15.6°C
December	2%	8%	<1%	3%	3.8–10.2°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.

1974Each stripe is one year’s mean temperature against the 47-year average. Warmest: 2012. Coolest: 1993.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5577153
NOAA station: USC00050950 · BRIGHTON 3 SE
Station distance: 15.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 40.08°, 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 BRIGHTON 3 SE is what differs

Brighton→Lochbuie→Todd Creek→Hudson→Aristocrat Ranchettes→Barr Lake→

Or put two places side by side: Fort Lupton vs Brighton

Best time to visitFort Lupton.