United States · 1991–2020

Best time to visit
Lake Wisconsin.

September leads for comfortable weather in Lake Wisconsin: typically 23.9°C by day, 10°C at night, with 102 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.9°C

Typical low10°C

Rain in September102 mm

Comfort

September

September · August · June

75climate match

Beach

July

July · August · June

65climate match

Outdoors

September

September · May · October

69climate match

The weakest month is January, scoring 5 against September’s 75 — days reach only -2.2°C, 26° 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

5-2.2° / -12.4°

Feb

5-0.8° / -12.4°

Mar

57.2° / -5.1°

Apr

2514.3° / 1°

May

6121.7° / 8.1°

Jun

6627° / 13.7°

Jul

6529.2° / 15.9°

Aug

6827.7° / 14.4°

Sep

7523.9° / 10°

Oct

4016.2° / 3.6°

Nov

118.4° / -2.5°

Dec

50.6° / -8.7°

Monthly climate evidence for Lake Wisconsin — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-2.2°C	-12.4°C	37 mm	6.3	9 h 18	5	Good coverage
February	-0.8°C	-12.4°C	41 mm	6.5	10 h 26	5	Good coverage
March	7.2°C	-5.1°C	63 mm	7.4	11 h 47	5	Good coverage
April	14.3°C	1°C	117 mm	10.7	13 h 21	25	Good coverage
May	21.7°C	8.1°C	119 mm	11.6	14 h 40	61	Good coverage
June	27°C	13.7°C	143 mm	10.9	15 h 23	66	Good coverage
July	29.2°C	15.9°C	116 mm	8.8	15 h 06	65	Good coverage
August	27.7°C	14.4°C	128 mm	9.2	13 h 58	68	Good coverage
September	23.9°C	10°C	102 mm	9.6	12 h 27	75	Good coverage
October	16.2°C	3.6°C	89 mm	9.3	10 h 57	40	Good coverage
November	8.4°C	-2.5°C	53 mm	6.4	9 h 38	11	Good coverage
December	0.6°C	-8.7°C	55 mm	7.8	8 h 59	5	Good coverage

Records at LODI WWTP, 2005–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.6°C31 Jan 2025	-36.1°C31 Jan 2019	18 mm29 Jan 2006	74 mm2017 · driest 2 mm in 2025	21
February	22.2°C23 Feb 2017	-36.1°C1 Feb 2019	32 mm17 Feb 2008	93 mm2008 · driest 12 mm in 2026	21
March	27.8°C22 Mar 2012	-25.6°C3 Mar 2014	48 mm20 Mar 2020	133 mm2016 · driest 12 mm in 2015	21
April	30.0°C30 Apr 2007	-11.1°C15 Apr 2014	65 mm14 Apr 2014	205 mm2014 · driest 41 mm in 2021	21
May	36.7°C29 May 2018	-4.4°C9 May 2020	82 mm27 May 2015	219 mm2015 · driest 30 mm in 2023	21
June	36.1°C15 Jun 2022	2.8°C2 Jun 2015	102 mm9 Jun 2008	286 mm2008 · driest 13 mm in 2012	21
July	38.9°C7 Jul 2012	7.2°C20 Jul 2009	94 mm23 Jul 2010	251 mm2010 · driest 45 mm in 2021	21
August	37.2°C24 Aug 2023	3.9°C31 Aug 2009	158 mm19 Aug 2007	386 mm2007 · driest 51 mm in 2024	20
September	35.6°C4 Sep 2023	-2.2°C24 Sep 2012	65 mm1 Sep 2010	222 mm2019 · driest 22 mm in 2017	20
October	32.2°C4 Oct 2025	-6.1°C12 Oct 2009	118 mm23 Oct 2020	173 mm2019 · driest 25 mm in 2005	21
November	24.4°C4 Nov 2015	-17.2°C21 Nov 2014	39 mm5 Nov 2022	116 mm2015 · driest 14 mm in 2021	21
December	20.0°C16 Dec 2021	-27.8°C31 Dec 2013	47 mm2 Dec 2007	114 mm2008 · driest 14 mm in 2017	21

Typical days per month at LODI WWTP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	1	5
February	0	0	28	1	5
March	<1	0	25	2	2
April	2	<1	13	3	<1
May	10	3	1	4	0
June	22	7	0	4	0
July	28	14	0	4	0
August	25	8	0	4	0
September	14	3	<1	3	0
October	3	<1	9	2	<1
November	0	0	21	2	1
December	0	0	28	2	5

How often, not how much — every day in LODI WWTP’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%	20%	3%	20%	-5.3–0.4°C
February	<1%	20%	4%	21%	-5.0–3.8°C
March	5%	24%	8%	30%	3.9–10.6°C
April	16%	36%	11%	51%	11.8–17.6°C
May	42%	35%	11%	44%	20.2–24.1°C
June	63%	36%	14%	48%	25.6–28.9°C
July	73%	27%	11%	28%	27.5–30.6°C
August	71%	29%	13%	34%	26.6–28.9°C
September	58%	30%	9%	39%	21.7–26.3°C
October	24%	28%	7%	33%	13.7–19.1°C
November	5%	21%	5%	24%	3.7–12.2°C
December	<1%	24%	6%	23%	-2.7–3.8°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.

2006Each stripe is one year’s mean temperature against the 20-year average. Warmest: 2016. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5259313
NOAA station: USC00474790 · LODI WWTP
Station distance: 6.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 43.37°, 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 LODI WWTP is what differs

Lodi→Dane→Merrimac→Harmony Grove→Okee→Springfield Corners→

Or put two places side by side: Lake Wisconsin vs Lodi

Best time to visitLake Wisconsin.

September

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Lake Wisconsin.

The whole year,
without the guesswork.

Nearby, measured,
and named.