United States · 1991–2020

Best time to visit
Lyons.

June leads for comfortable weather in Lyons: typically 25.5°C by day, 13.7°C at night, with 87 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.5°C

Typical low13.7°C

Rain in June87 mm

Comfort

June

June · August · July

81climate match

Beach

July

July · August · June

67climate match

Outdoors

September

September · May · June

80climate match

The weakest month is January, scoring 5 against June’s 81 — days reach only -1.4°C, 25° 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

5-1.4° / -9.1°

Feb

50.1° / -8.6°

Mar

56.1° / -4.1°

Apr

2813.5° / 1.6°

May

5920° / 8°

Jun

8125.5° / 13.7°

Jul

7627.4° / 15.6°

Aug

8026.3° / 14.7°

Sep

7522.3° / 9.8°

Oct

4015.3° / 4.1°

Nov

97.9° / -0.8°

Dec

51.2° / -5.8°

Monthly climate evidence for Lyons — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-1.4°C	-9.1°C	57 mm	9.9	9 h 20	5	Good coverage
February	0.1°C	-8.6°C	43 mm	7.7	10 h 27	5	Good coverage
March	6.1°C	-4.1°C	52 mm	7.7	11 h 47	5	Good coverage
April	13.5°C	1.6°C	87 mm	9.6	13 h 20	28	Good coverage
May	20°C	8°C	97 mm	9.8	14 h 37	59	Good coverage
June	25.5°C	13.7°C	87 mm	8.5	15 h 20	81	Good coverage
July	27.4°C	15.6°C	85 mm	7.6	15 h 03	76	Good coverage
August	26.3°C	14.7°C	88 mm	8.1	13 h 56	80	Good coverage
September	22.3°C	9.8°C	77 mm	7.8	12 h 26	75	Good coverage
October	15.3°C	4.1°C	80 mm	8.9	10 h 58	40	Good coverage
November	7.9°C	-0.8°C	70 mm	7.9	9 h 40	9	Good coverage
December	1.2°C	-5.8°C	51 mm	9.7	9 h 01	5	Good coverage

Records at IONIA 2SSW, 1896–2013
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.3°C26 Jan 1950	-31.7°C15 Jan 1963	36 mm27 Jan 1967	111 mm1998 · driest 0 mm in 1904	73
February	20.6°C12 Feb 1999	-31.7°C12 Feb 1899	78 mm22 Feb 1990	130 mm1990 · driest 0 mm in 1904	73
March	30.0°C22 Mar 2012	-26.1°C8 Mar 1943	56 mm3 Mar 1985	131 mm1985 · driest 12 mm in 2001	72
April	31.1°C29 Apr 1899	-14.4°C7 Apr 1982	66 mm23 Apr 1999	231 mm2013 · driest 20 mm in 2005	74
May	35.0°C31 May 1988	-7.2°C6 May 1989	65 mm21 May 1996	210 mm2000 · driest 0 mm in 1904	74
June	38.9°C19 Jun 1953	-1.7°C2 Jun 1897	95 mm24 Jun 1994	215 mm1994 · driest 0 mm in 1904	76
July	39.4°C6 Jul 1988	2.8°C4 Jul 1963	86 mm28 Jul 1945	204 mm1950 · driest 0 mm in 1903	74
August	39.4°C5 Aug 1947	2.2°C29 Aug 1982	104 mm21 Aug 1958	310 mm1987 · driest 0 mm in 1903	75
September	36.7°C9 Sep 1897	-3.9°C29 Sep 1984	121 mm10 Sep 1986	374 mm1986 · driest 0 mm in 1904	76
October	31.7°C2 Oct 1971	-8.9°C25 Oct 1960	130 mm1 Oct 1981	181 mm1981 · driest 0 mm in 1904	77
November	26.1°C1 Nov 1950	-21.7°C30 Nov 1958	55 mm11 Nov 1995	183 mm2003 · driest 0 mm in 1903	75
December	20.0°C6 Dec 2001	-25.6°C24 Dec 1896	61 mm10 Dec 1971	144 mm1984 · driest 5 mm in 1900	74

Typical days per month at IONIA 2SSW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	2	14
February	0	0	27	1	11
March	<1	0	25	2	6
April	1	<1	12	3	2
May	7	1	1	3	0
June	18	6	0	3	0
July	24	7	0	3	0
August	22	5	0	3	0
September	10	2	<1	3	0
October	2	0	7	3	<1
November	0	0	18	2	4
December	0	0	28	1	12

How often, not how much — every day in IONIA 2SSW’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%	27%	4%	30%	-4.3–2.1°C
February	0%	23%	4%	25%	-2.8–3.6°C
March	4%	25%	6%	29%	3.2–9.8°C
April	16%	29%	9%	33%	11.4–17.0°C
May	44%	29%	10%	34%	18.0–24.3°C
June	70%	26%	9%	28%	24.2–28.9°C
July	77%	22%	7%	21%	26.8–30.8°C
August	76%	23%	10%	22%	25.3–29.7°C
September	58%	24%	9%	28%	20.9–25.8°C
October	25%	24%	7%	28%	13.7–19.9°C
November	2%	26%	7%	30%	5.5–10.5°C
December	0%	27%	5%	31%	-1.4–4.0°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.

1897Each stripe is one year’s mean temperature against the 60-year average. Warmest: 1998. Coolest: 1989.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5000388
NOAA station: USC00204078 · IONIA 2SSW
Station distance: 11.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 42.98°, 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 IONIA 2SSW is what differs

Ionia→Portland→Lake Odessa→Saranac→Muir→Sunfield→

Or put two places side by side: Lyons vs Ionia

Best time to visitLyons.