United States · 1991–2020

Best time to visit
Smithboro.

September leads for comfortable weather in Smithboro: typically 26.1°C by day, 12.8°C at night, with 83 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.1°C

Typical low12.8°C

Rain in September83 mm

Comfort

September

September · May · August

79climate match

Beach

August

August · July · June

78climate match

Outdoors

October

October · April · September

81climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 2.7°C, 21° 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

52.7° / -6.1°

Feb

55.8° / -4°

Mar

2311.8° / 0.9°

Apr

5018.6° / 6.4°

May

7423.8° / 12.2°

Jun

6428.6° / 17.1°

Jul

5830.7° / 19.3°

Aug

6630.1° / 18°

Sep

7926.1° / 12.8°

Oct

6119.8° / 6.4°

Nov

2412.1° / 1.6°

Dec

54.8° / -3.9°

Monthly climate evidence for Smithboro — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.7°C	-6.1°C	83 mm	7.6	9 h 43	5	Good coverage
February	5.8°C	-4°C	63 mm	5.8	10 h 41	5	Good coverage
March	11.8°C	0.9°C	83 mm	7.8	11 h 50	23	Good coverage
April	18.6°C	6.4°C	111 mm	9.7	13 h 10	50	Good coverage
May	23.8°C	12.2°C	131 mm	10.2	14 h 16	74	Good coverage
June	28.6°C	17.1°C	118 mm	8.9	14 h 53	64	Good coverage
July	30.7°C	19.3°C	94 mm	7	14 h 38	58	Good coverage
August	30.1°C	18°C	74 mm	6.2	13 h 41	66	Good coverage
September	26.1°C	12.8°C	83 mm	6.4	12 h 24	79	Good coverage
October	19.8°C	6.4°C	82 mm	6.6	11 h 07	61	Good coverage
November	12.1°C	1.6°C	97 mm	7.8	10 h	24	Good coverage
December	4.8°C	-3.9°C	67 mm	7	9 h 27	5	Good coverage

Records at VANDALIA, 1899–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C20 Jan 1906	-30.0°C27 Jan 1904	58 mm5 Jan 2005	232 mm2005 · driest 2 mm in 1981	42
February	25.0°C25 Feb 2000	-28.3°C13 Feb 1905	79 mm11 Feb 2009	137 mm2008 · driest 4 mm in 1983	42
March	28.9°C29 Mar 1985	-22.8°C5 Mar 1978	72 mm19 Mar 2008	203 mm2008 · driest 19 mm in 2001	42
April	31.7°C30 Apr 1901	-6.7°C19 Apr 1983	77 mm29 Apr 1996	260 mm2011 · driest 22 mm in 1977	41
May	34.4°C30 May 2012	-2.2°C1 May 1903	85 mm8 May 1995	304 mm1995 · driest 16 mm in 1903	41
June	40.0°C29 Jun 2012	3.9°C13 Jun 1903	116 mm28 Jun 2010	310 mm2011 · driest 6 mm in 1992	41
July	43.9°C21 Jul 1901	8.9°C8 Jul 1901	56 mm5 Jul 1905	247 mm1905 · driest 5 mm in 1984	41
August	41.1°C2 Aug 1901	5.0°C23 Aug 1904	96 mm4 Aug 1984	204 mm1984 · driest 18 mm in 2007	43
September	36.7°C9 Sep 1901	-2.2°C19 Sep 1901	95 mm1 Sep 2012	509 mm1900 · driest 6 mm in 2004	43
October	36.1°C1 Oct 1901	-5.6°C14 Oct 1979	89 mm18 Oct 1905	209 mm2009 · driest 12 mm in 2010	44
November	27.2°C5 Nov 2003	-15.0°C26 Nov 1977	84 mm25 Nov 2010	344 mm1900 · driest 6 mm in 1976	43
December	22.2°C3 Dec 1982	-27.2°C22 Dec 1989	60 mm30 Dec 1990	186 mm1990 · driest 8 mm in 1976	44

Typical days per month at VANDALIA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	3
February	0	0	22	2	2
March	1	0	15	3	<1
April	5	<1	4	4	0
May	14	4	0	4	0
June	25	13	0	4	0
July	30	20	0	3	0
August	29	17	0	3	0
September	19	6	0	3	0
October	7	1	3	3	<1
November	<1	0	13	3	<1
December	0	0	24	2	2

How often, not how much — every day in VANDALIA’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%	23%	8%	18%	-0.7–7.1°C
February	1%	20%	7%	16%	0.7–8.7°C
March	12%	25%	10%	24%	7.6–14.8°C
April	31%	29%	12%	36%	15.9–21.3°C
May	58%	29%	13%	36%	21.4–26.7°C
June	69%	29%	12%	31%	27.4–30.9°C
July	78%	20%	9%	17%	29.5–33.1°C
August	80%	19%	8%	15%	28.3–33.5°C
September	73%	21%	10%	18%	24.5–28.9°C
October	43%	20%	9%	18%	17.6–22.5°C
November	12%	23%	10%	23%	8.8–15.3°C
December	<1%	20%	7%	17%	2.3–7.4°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.

1901Each stripe is one year’s mean temperature against the 33-year average. Warmest: 1998. Coolest: 1978.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4250205
NOAA station: USC00118781 · VANDALIA
Station distance: 22.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 38.90°, 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 VANDALIA is what differs

Vandalia→Greenville→Mulberry Grove→Vernon→Bluff City→Durley→

Or put two places side by side: Smithboro vs Vandalia

Best time to visitSmithboro.