United States · 1991–2020

Best time to visit
Johnson Creek.

September leads for comfortable weather in Johnson Creek: typically 23.8°C by day, 11.6°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.8°C

Typical low11.6°C

Rain in September86 mm

Comfort

September

September · August · June

82climate match

Beach

July

July · August · June

70climate match

Outdoors

May

May · September · October

74climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only -2.4°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

5-2.4° / -11.2°

Feb

5-1.2° / -10.8°

Mar

56.4° / -4°

Apr

2713.8° / 2.3°

May

6020.6° / 8.9°

Jun

7126.4° / 14.9°

Jul

6628.5° / 17.2°

Aug

7327.3° / 16.1°

Sep

8223.8° / 11.6°

Oct

4315.9° / 5°

Nov

107.9° / -1.6°

Dec

50.3° / -7.7°

Monthly climate evidence for Johnson Creek — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-2.4°C	-11.2°C	45 mm	7	9 h 19	5	Good coverage
February	-1.2°C	-10.8°C	43 mm	7.1	10 h 27	5	Good coverage
March	6.4°C	-4°C	59 mm	7.1	11 h 47	5	Good coverage
April	13.8°C	2.3°C	106 mm	10.1	13 h 20	27	Good coverage
May	20.6°C	8.9°C	111 mm	10.8	14 h 38	60	Good coverage
June	26.4°C	14.9°C	140 mm	9.4	15 h 21	71	Good coverage
July	28.5°C	17.2°C	113 mm	7.1	15 h 04	66	Good coverage
August	27.3°C	16.1°C	105 mm	7.7	13 h 56	73	Good coverage
September	23.8°C	11.6°C	86 mm	7.8	12 h 26	82	Good coverage
October	15.9°C	5°C	85 mm	8.7	10 h 57	43	Good coverage
November	7.9°C	-1.6°C	58 mm	6.8	9 h 39	10	Good coverage
December	0.3°C	-7.7°C	58 mm	8.3	9 h 01	5	Good coverage

Records at JEFFERSON WWTP, 2004–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	14.4°C30 Jan 2013	-34.4°C31 Jan 2019	30 mm29 Jan 2006	92 mm2005 · driest 3 mm in 2025	22
February	21.7°C23 Feb 2017	-33.9°C1 Feb 2019	35 mm27 Feb 2023	89 mm2023 · driest 12 mm in 2026	22
March	28.3°C22 Mar 2012	-22.8°C1 Mar 2015	56 mm25 Mar 2009	148 mm2009 · driest 16 mm in 2015	22
April	29.4°C30 Apr 2007	-8.9°C8 Apr 2018	58 mm14 Apr 2014	193 mm2026 · driest 32 mm in 2021	22
May	35.0°C28 May 2018	-5.0°C9 May 2020	90 mm13 May 2014	199 mm2018 · driest 20 mm in 2026	22
June	36.1°C25 Jun 2005	5.0°C1 Jun 2015	88 mm16 Jun 2022	269 mm2010 · driest 9 mm in 2012	22
July	40.6°C6 Jul 2012	9.4°C2 Jul 2015	110 mm23 Jul 2010	229 mm2010 · driest 27 mm in 2021	22
August	38.9°C2 Aug 2006	6.1°C31 Aug 2009	108 mm19 Aug 2007	322 mm2007 · driest 30 mm in 2008	21
September	35.0°C11 Sep 2013	1.7°C30 Sep 2022	121 mm12 Sep 2022	190 mm2015 · driest 2 mm in 2017	22
October	31.7°C4 Oct 2025	-4.4°C12 Oct 2009	72 mm2 Oct 2019	163 mm2006 · driest 14 mm in 2005	22
November	23.9°C10 Nov 2020	-16.1°C21 Nov 2014	50 mm5 Nov 2022	122 mm2015 · driest 9 mm in 2007	22
December	18.9°C4 Dec 2012	-25.0°C25 Dec 2013	40 mm14 Dec 2015	132 mm2015 · driest 18 mm in 2017	22

Typical days per month at JEFFERSON WWTP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	1	7
February	0	0	27	1	7
March	<1	0	24	2	2
April	2	0	9	3	<1
May	8	2	<1	4	0
June	20	7	0	4	0
July	27	11	0	3	0
August	24	7	0	3	0
September	13	3	0	3	0
October	3	<1	5	3	<1
November	0	0	19	2	1
December	0	0	28	2	6

How often, not how much — every day in JEFFERSON 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%	23%	4%	23%	-5.1–0.3°C
February	<1%	22%	4%	23%	-5.6–3.1°C
March	3%	24%	7%	30%	3.6–9.9°C
April	14%	34%	11%	44%	11.1–17.0°C
May	40%	32%	11%	41%	18.6–23.5°C
June	65%	32%	14%	37%	24.9–28.1°C
July	75%	24%	10%	25%	26.8–30.0°C
August	75%	24%	12%	23%	26.0–28.3°C
September	62%	25%	9%	30%	21.5–25.7°C
October	22%	27%	8%	32%	13.2–19.4°C
November	4%	22%	6%	23%	3.1–11.2°C
December	0%	25%	5%	25%	-3.2–4.3°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5257996
NOAA station: USC00474108 · JEFFERSON WWTP
Station distance: 9.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 43.08°, 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 JEFFERSON WWTP is what differs

Jefferson→Helenville→Jefferson Junction→Village Terrace Mobile Home Park→Rock River Mobile Home Park→

Or put two places side by side: Johnson Creek vs Jefferson

Best time to visitJohnson Creek.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Johnson Creek.

The whole year,
without the guesswork.

Nearby, measured,
and named.