United States · 1991–2020

Best time to visit
Bonair.

September leads for comfortable weather in Bonair: typically 23°C by day, 9.1°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23°C

Typical low9.1°C

Rain in September94 mm

Comfort

September

September · August · July

74climate match

Beach

July

July · August · June

59climate match

Outdoors

September

September · May · October

74climate match

The weakest month is January, scoring 5 against September’s 74 — days reach only -4.7°C, 29° 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

5-4.7° / -14.9°

Feb

5-2.2° / -13.1°

Mar

55.1° / -6.1°

Apr

2613.6° / 0.4°

May

5620.4° / 7.3°

Jun

6725.9° / 13.3°

Jul

7027.8° / 15.3°

Aug

7326.6° / 13.8°

Sep

7423° / 9.1°

Oct

3915.4° / 2.2°

Nov

55.9° / -4.5°

Dec

5-1.5° / -10.9°

Monthly climate evidence for Bonair — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.7°C	-14.9°C	28 mm	5.8	9 h 17	5	Strong coverage
February	-2.2°C	-13.1°C	30 mm	5.3	10 h 26	5	Strong coverage
March	5.1°C	-6.1°C	48 mm	6.7	11 h 47	5	Strong coverage
April	13.6°C	0.4°C	96 mm	8.8	13 h 21	26	Strong coverage
May	20.4°C	7.3°C	114 mm	11.1	14 h 40	56	Strong coverage
June	25.9°C	13.3°C	156 mm	10.8	15 h 23	67	Strong coverage
July	27.8°C	15.3°C	123 mm	8.3	15 h 06	70	Strong coverage
August	26.6°C	13.8°C	119 mm	8.2	13 h 58	73	Strong coverage
September	23°C	9.1°C	94 mm	7.5	12 h 27	74	Strong coverage
October	15.4°C	2.2°C	71 mm	7.4	10 h 56	39	Strong coverage
November	5.9°C	-4.5°C	47 mm	5.5	9 h 37	5	Strong coverage
December	-1.5°C	-10.9°C	37 mm	6.3	8 h 58	5	Strong coverage

What has changed

Bonair runs +1.1°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

+1.6

Feb

+0.1

Mar

+1.3

Apr

-0.1

May

+0.6

Jun

+1.2

Jul

+1.2

Aug

+0.7

Sep

+2.5

Oct

+0.5

Nov

+0.4

Dec

+2.8

September daytime highs, 2011–2019. Last recorded: 24.3°C.

Records at CRESCO 1 NE, 1893–2020
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.0°C27 Jan 2002	-37.2°C15 Jan 1963	48 mm5 Jan 1946	77 mm1946 · driest 0 mm in 1948	93
February	17.2°C18 Feb 1981	-37.8°C2 Feb 1996	30 mm21 Feb 2017	76 mm2007 · driest 0 mm in 1958	92
March	28.9°C29 Mar 1895	-33.9°C1 Mar 1962	49 mm14 Mar 1990	135 mm1990 · driest 3 mm in 1994	93
April	32.8°C23 Apr 1980	-18.3°C6 Apr 1982	74 mm4 Apr 1981	178 mm1991 · driest 17 mm in 1946	93
May	36.7°C28 May 2018	-6.1°C3 May 2005	69 mm22 May 1902	283 mm2013 · driest 18 mm in 1897	93
June	37.8°C22 Jun 1988	-0.6°C1 Jun 1897	111 mm8 Jun 2008	320 mm1969 · driest 18 mm in 1988	94
July	41.1°C24 Jul 1901	4.4°C1 Jul 1988	121 mm16 Jul 1950	348 mm1972 · driest 2 mm in 1894	95
August	38.3°C10 Aug 1985	1.1°C20 Aug 1950	158 mm31 Aug 1962	303 mm2007 · driest 3 mm in 1969	94
September	36.7°C6 Sep 1939	-6.1°C30 Sep 1899	131 mm21 Sep 1986	383 mm1965 · driest 6 mm in 1940	95
October	33.3°C4 Oct 1997	-13.3°C30 Oct 1895	113 mm15 Oct 1966	190 mm2017 · driest 0 mm in 1952	94
November	25.6°C8 Nov 1999	-26.7°C26 Nov 1977	79 mm1 Nov 1991	174 mm1991 · driest 1 mm in 1976	91
December	17.2°C4 Dec 2012	-34.4°C19 Dec 1983	42 mm14 Dec 2015	111 mm2015 · driest 5 mm in 1958	93

Typical days per month at CRESCO 1 NE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	7
February	0	0	28	<1	6
March	<1	0	26	1	4
April	2	<1	15	3	1
May	8	1	2	4	<1
June	19	6	0	5	0
July	25	9	0	4	0
August	22	6	0	4	0
September	12	2	1	3	0
October	2	<1	13	2	<1
November	0	0	24	1	2
December	0	0	30	1	6

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 82); on 2011–2025 it is September (80). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in CRESCO 1 NE’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%	16%	2%	10%	-8.6–-2.0°C
February	0%	16%	2%	12%	-6.3–2.1°C
March	2%	22%	6%	21%	0.8–8.2°C
April	16%	27%	10%	33%	10.3–16.5°C
May	41%	32%	12%	41%	17.9–23.2°C
June	63%	32%	14%	38%	23.5–27.8°C
July	75%	25%	12%	24%	26.1–30.3°C
August	73%	25%	11%	26%	24.7–29.8°C
September	54%	25%	10%	28%	20.1–25.0°C
October	23%	21%	7%	20%	12.6–18.6°C
November	2%	19%	5%	16%	1.7–9.2°C
December	0%	18%	3%	14%	-5.4–1.3°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.

1894Each stripe is one year’s mean temperature against the 84-year average. Warmest: 2012. Coolest: 1979.2019

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4849008
NOAA station: USC00131954 · CRESCO 1 NE
Station distance: 8.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 43.42°, 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 CRESCO 1 NE is what differs

Cresco→Lime Springs→Ridgeway→Protivin→Chester→Davis Corners→

Or put two places side by side: Bonair vs Cresco

Best time to visitBonair.

September

July

September

The whole year,without the guesswork.

Bonair runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Bonair.

The whole year,
without the guesswork.

Bonair runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.