United States · 1991–2020

Best time to visit
American Fork.

September leads for comfortable weather in American Fork: typically 27°C by day, 10.8°C at night, with 26 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27°C

Typical low10.8°C

Rain in September26 mm

Comfort

September

September · June · May

81climate match

Beach

August

August · June · July

76climate match

Outdoors

October

October · May · September

84climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only 4.2°C, 20° 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

54.2° / -5.5°

Feb

97.8° / -3.2°

Mar

3713.7° / 0.6°

Apr

5117.3° / 3.4°

May

7722.9° / 7.9°

Jun

7928.7° / 12.5°

Jul

6533.5° / 16.8°

Aug

7032.3° / 16.2°

Sep

8127° / 10.8°

Oct

6218.9° / 4.2°

Nov

2610.8° / -0.9°

Dec

54.6° / -5°

Monthly climate evidence for American Fork — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.2°C	-5.5°C	44 mm	8	9 h 35	5	Strong coverage
February	7.8°C	-3.2°C	42 mm	7.3	10 h 36	9	Strong coverage
March	13.7°C	0.6°C	40 mm	6.2	11 h 49	37	Strong coverage
April	17.3°C	3.4°C	49 mm	7.5	13 h 13	51	Strong coverage
May	22.9°C	7.9°C	53 mm	6.9	14 h 24	77	Strong coverage
June	28.7°C	12.5°C	23 mm	3.7	15 h 02	79	Strong coverage
July	33.5°C	16.8°C	14 mm	3	14 h 47	65	Strong coverage
August	32.3°C	16.2°C	20 mm	3.8	13 h 46	70	Strong coverage
September	27°C	10.8°C	26 mm	4.2	12 h 25	81	Strong coverage
October	18.9°C	4.2°C	36 mm	5.2	11 h 03	62	Strong coverage
November	10.8°C	-0.9°C	30 mm	5	9 h 53	26	Strong coverage
December	4.6°C	-5°C	37 mm	6.6	9 h 18	5	Strong coverage

What has changed

American Fork runs +1.4°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

+0.7

Feb

+0.8

Mar

+1.9

Apr

+0.9

May

+0.4

Jun

+2.0

Jul

+2.0

Aug

+1.9

Sep

+3.1

Oct

+0.2

Nov

+1.0

Dec

+1.5

September daytime highs, 2011–2025. Last recorded: 29.3°C.

Records at PLEASANT GROVE, 1947–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.7°C26 Jan 2003	-28.3°C26 Jan 1949	33 mm10 Jan 2005	133 mm2023 · driest 0 mm in 1961	74
February	21.1°C25 Feb 1986	-27.2°C7 Feb 1989	34 mm18 Feb 1980	103 mm2019 · driest 1 mm in 2015	75
March	31.1°C25 Mar 2026	-19.4°C4 Mar 1966	36 mm6 Mar 2000	133 mm1952 · driest 1 mm in 2013	76
April	32.2°C30 Apr 2020	-7.8°C1 Apr 2008	38 mm14 Apr 2009	132 mm1999 · driest 4 mm in 1950	78
May	36.1°C30 May 2020	-4.4°C7 May 1965	46 mm10 May 1985	170 mm2019 · driest 1 mm in 1972	77
June	39.4°C29 Jun 2015	-1.7°C8 Jun 1950	40 mm13 Jun 1998	112 mm1998 · driest 0 mm in 2012	78
July	40.0°C15 Jul 2007	5.6°C29 Jul 1948	33 mm28 Jul 1982	55 mm1989 · driest 0 mm in 1964	78
August	39.4°C7 Aug 2012	1.7°C29 Aug 1964	37 mm19 Aug 1959	70 mm1983 · driest 0 mm in 1974	77
September	37.8°C1 Sep 2024	-4.4°C18 Sep 1965	37 mm18 Sep 1978	152 mm1982 · driest 0 mm in 1979	76
October	32.8°C9 Oct 2023	-10.6°C30 Oct 2019	42 mm20 Oct 1979	122 mm2004 · driest 0 mm in 2014	77
November	25.0°C3 Nov 2020	-20.0°C16 Nov 1955	33 mm22 Nov 1996	88 mm1978 · driest 3 mm in 1976	78
December	18.9°C21 Dec 1969	-25.6°C23 Dec 1990	34 mm13 Dec 2009	150 mm1983 · driest 3 mm in 2011	77

Typical days per month at PLEASANT GROVE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	1	5
February	0	0	23	1	4
March	<1	0	15	1	2
April	3	<1	6	1	1
May	13	3	<1	2	<1
June	24	14	0	<1	0
July	30	28	0	<1	0
August	30	25	0	<1	0
September	21	10	<1	<1	0
October	5	<1	5	1	<1
November	0	0	18	<1	2
December	0	0	27	1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 82); on 2011–2025 it is May (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in PLEASANT GROVE’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%	25%	4%	27%	0.3–7.0°C
February	<1%	24%	4%	28%	3.7–10.5°C
March	11%	24%	4%	27%	9.9–15.9°C
April	36%	22%	4%	23%	14.3–20.2°C
May	64%	20%	4%	22%	20.0–25.2°C
June	86%	12%	2%	10%	25.8–31.1°C
July	90%	10%	1%	7%	31.1–34.8°C
August	87%	13%	2%	7%	30.1–33.3°C
September	81%	14%	3%	11%	24.0–29.7°C
October	48%	17%	4%	15%	16.3–22.1°C
November	6%	19%	3%	19%	7.4–13.9°C
December	0%	22%	4%	24%	1.7–7.4°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.

1949Each stripe is one year’s mean temperature against the 65-year average. Warmest: 2020. Coolest: 1984.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5844096
NOAA station: USC00426919 · PLEASANT GROVE
Station distance: 5.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 40.38°, 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 PLEASANT GROVE is what differs

Pleasant Grove→Lindon→Hardy→Wing→

Or put two places side by side: American Fork vs Pleasant Grove

Best time to visitAmerican Fork.