United States · 1991–2020

Best time to visit
Bonnie.

September leads for comfortable weather in Bonnie: typically 26.1°C by day, 13.5°C at night, with 76 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.1°C

Typical low13.5°C

Rain in September76 mm

Comfort

September

September · May · June

82climate match

Beach

July

July · August · June

77climate match

Outdoors

October

October · April · September

81climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only 3.7°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

53.7° / -5.8°

Feb

56.6° / -4°

Mar

2112.1° / 0.8°

Apr

4818.5° / 6.5°

May

7323.4° / 12.4°

Jun

6628.3° / 17.4°

Jul

6030.1° / 19.4°

Aug

6629.6° / 18.1°

Sep

8226.1° / 13.5°

Oct

6119.8° / 6.8°

Nov

2212.2° / 1.2°

Dec

56.1° / -3.6°

Monthly climate evidence for Bonnie — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.7°C	-5.8°C	67 mm	7	9 h 47	5	Strong coverage
February	6.6°C	-4°C	66 mm	6.7	10 h 43	5	Strong coverage
March	12.1°C	0.8°C	98 mm	8.9	11 h 50	21	Strong coverage
April	18.5°C	6.5°C	127 mm	9.6	13 h 08	48	Strong coverage
May	23.4°C	12.4°C	128 mm	10.8	14 h 13	73	Strong coverage
June	28.3°C	17.4°C	115 mm	8.2	14 h 48	66	Strong coverage
July	30.1°C	19.4°C	95 mm	7.3	14 h 34	60	Strong coverage
August	29.6°C	18.1°C	86 mm	6.5	13 h 38	66	Strong coverage
September	26.1°C	13.5°C	76 mm	5.9	12 h 23	82	Strong coverage
October	19.8°C	6.8°C	87 mm	6.6	11 h 08	61	Strong coverage
November	12.2°C	1.2°C	103 mm	7.7	10 h 03	22	Strong coverage
December	6.1°C	-3.6°C	70 mm	7.1	9 h 31	5	Strong coverage

What has changed

Bonnie runs +0.3°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

+1.0

Feb

+1.3

Mar

+0.8

Apr

0.0

May

-0.4

Jun

-0.2

Jul

-0.7

Aug

-0.7

Sep

+0.4

Oct

0.0

Nov

-0.3

Dec

+2.1

September daytime highs, 2011–2025. Last recorded: 30.1°C.

Records at MT VERNON 3 NE, 1895–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C24 Jan 1943	-29.4°C19 Jan 1994	93 mm14 Jan 1937	292 mm1937 · driest 0 mm in 2026	130
February	26.1°C29 Feb 1972	-30.0°C10 Feb 1899	110 mm2 Feb 1986	168 mm1908 · driest 2 mm in 2024	130
March	33.3°C21 Mar 1907	-23.3°C4 Mar 1978	103 mm19 Mar 2008	306 mm1945 · driest 1 mm in 1910	130
April	32.8°C21 Apr 1946	-8.3°C1 Apr 1923	122 mm29 Apr 1996	318 mm2011 · driest 23 mm in 1915	131
May	37.2°C21 May 1941	-1.7°C1 May 1903	128 mm17 May 1990	327 mm1995 · driest 9 mm in 1914	131
June	40.6°C29 Jun 1931	2.2°C1 Jun 1924	104 mm22 Jun 1897	298 mm2011 · driest 4 mm in 1933	132
July	45.6°C14 Jul 1936	7.8°C23 Jul 1947	112 mm16 Jul 1956	275 mm1948 · driest 3 mm in 2025	131
August	43.9°C17 Aug 1936	5.6°C29 Aug 1986	157 mm16 Aug 1946	365 mm1946 · driest 2 mm in 2025	130
September	40.6°C15 Sep 1939	-5.0°C30 Sep 1899	108 mm2 Sep 1931	259 mm1945 · driest 1 mm in 2025	131
October	35.6°C5 Oct 1938	-7.8°C24 Oct 1981	111 mm26 Oct 1919	353 mm1919 · driest 0 mm in 1908	130
November	30.0°C1 Nov 1938	-20.6°C30 Nov 1929	112 mm14 Nov 1993	333 mm1985 · driest 0 mm in 2025	131
December	25.6°C2 Dec 1970	-28.3°C22 Dec 1989	76 mm20 Dec 1957	258 mm1982 · driest 4 mm in 2024	130

Typical days per month at MT VERNON 3 NE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	24	2	2
February	0	0	21	2	2
March	<1	0	15	3	<1
April	4	0	4	4	0
May	13	2	0	4	0
June	25	11	0	4	0
July	29	17	0	3	0
August	29	15	0	3	0
September	19	7	0	2	0
October	7	<1	4	3	<1
November	<1	0	13	3	<1
December	0	0	22	3	<1

How often, not how much — every day in MT VERNON 3 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	<1%	22%	8%	21%	1.1–8.3°C
February	3%	23%	8%	23%	2.3–10.4°C
March	14%	28%	11%	32%	9.2–17.0°C
April	35%	31%	12%	39%	16.6–22.1°C
May	60%	30%	12%	34%	22.1–27.3°C
June	71%	28%	11%	32%	27.0–32.4°C
July	78%	22%	9%	19%	29.7–34.6°C
August	79%	21%	9%	18%	28.8–33.8°C
September	75%	21%	9%	19%	24.7–30.5°C
October	51%	19%	8%	18%	18.7–24.2°C
November	13%	23%	10%	23%	9.7–15.6°C
December	1%	23%	9%	22%	3.0–9.9°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.

1896Each stripe is one year’s mean temperature against the 121-year average. Warmest: 1921. Coolest: 2014.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4234209
NOAA station: USC00115943 · MT VERNON 3 NE
Station distance: 18.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 38.20°, 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 MT VERNON 3 NE is what differs

Mount Vernon→Woodlawn→Bluford→Belle Rive→Opdyke→Keenes→

Or put two places side by side: Bonnie vs Mount Vernon

Best time to visitBonnie.