United States · 1991–2020

Best time to visit
Osage.

August leads for comfortable weather in Osage: typically 26.4°C by day, 15.3°C at night, with 99 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.4°C

Typical low15.3°C

Rain in August99 mm

Comfort

August

August · September · June

78climate match

Beach

July

July · August · June

63climate match

Outdoors

September

September · May · October

76climate match

The weakest month is January, scoring 5 against August’s 78 — days reach only -4.6°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

5-4.6° / -13.8°

Feb

5-1.9° / -11.5°

Mar

55.2° / -4.6°

Apr

2813.7° / 2°

May

5520.4° / 8.8°

Jun

7225.8° / 14.8°

Jul

6827.6° / 16.8°

Aug

7826.4° / 15.3°

Sep

7823.1° / 10.5°

Oct

4315.5° / 3.4°

Nov

56.2° / -3.4°

Dec

5-1.4° / -9.9°

Monthly climate evidence for Osage — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.6°C	-13.8°C	25 mm	4.4	9 h 18	5	Strong coverage
February	-1.9°C	-11.5°C	29 mm	4	10 h 26	5	Strong coverage
March	5.2°C	-4.6°C	47 mm	6	11 h 47	5	Strong coverage
April	13.7°C	2°C	106 mm	8.4	13 h 21	28	Strong coverage
May	20.4°C	8.8°C	139 mm	11.8	14 h 39	55	Strong coverage
June	25.8°C	14.8°C	142 mm	10.2	15 h 22	72	Strong coverage
July	27.6°C	16.8°C	122 mm	8	15 h 05	68	Strong coverage
August	26.4°C	15.3°C	99 mm	7.8	13 h 57	78	Strong coverage
September	23.1°C	10.5°C	88 mm	7.1	12 h 27	78	Strong coverage
October	15.5°C	3.4°C	69 mm	6.5	10 h 57	43	Strong coverage
November	6.2°C	-3.4°C	49 mm	4.7	9 h 38	5	Strong coverage
December	-1.4°C	-9.9°C	37 mm	5	8 h 59	5	Strong coverage

What has changed

Osage runs +0.0°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

+0.5

Feb

-1.0

Mar

+0.9

Apr

-1.6

May

-0.9

Jun

0.0

Jul

-0.6

Aug

-0.7

Sep

+1.6

Oct

-0.2

Nov

+0.3

Dec

+2.0

August daytime highs, 2011–2025. Last recorded: 25.9°C.

Records at OSAGE, 1894–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.1°C27 Jan 2002	-37.2°C12 Jan 1912	41 mm30 Jan 1947	83 mm1982 · driest 0 mm in 2000	120
February	22.8°C27 Feb 2024	-37.2°C1 Feb 1996	34 mm25 Feb 2007	89 mm1915 · driest 0 mm in 1964	120
March	28.9°C23 Mar 1910	-32.8°C1 Mar 1962	53 mm6 Mar 1959	121 mm1956 · driest 0 mm in 1999	119
April	33.3°C22 Apr 1980	-14.4°C6 Apr 1982	78 mm28 Apr 1975	194 mm2008 · driest 9 mm in 1910	119
May	40.6°C31 May 1934	-6.1°C9 May 1945	123 mm27 May 1938	319 mm2013 · driest 27 mm in 1934	118
June	40.6°C27 Jun 1934	1.1°C8 Jun 1901	160 mm13 Jun 1914	337 mm1914 · driest 11 mm in 1933	118
July	41.7°C14 Jul 1936	5.6°C30 Jul 1899	146 mm18 Jul 1999	360 mm1999 · driest 14 mm in 1910	119
August	39.4°C3 Aug 1930	2.8°C25 Aug 1958	162 mm10 Aug 1980	443 mm1980 · driest 12 mm in 2003	119
September	38.3°C5 Sep 1913	-6.7°C30 Sep 1899	131 mm20 Sep 1983	340 mm1965 · driest 6 mm in 1975	116
October	33.9°C4 Oct 1997	-20.0°C30 Oct 1925	68 mm9 Oct 1970	227 mm2009 · driest 0 mm in 1952	117
November	25.6°C9 Nov 2006	-26.1°C26 Nov 1977	102 mm27 Nov 1995	191 mm1909 · driest 0 mm in 2002	115
December	20.0°C6 Dec 2001	-34.4°C27 Dec 1950	45 mm28 Dec 1982	104 mm2015 · driest 0 mm in 1995	115

Typical days per month at OSAGE, 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	27	<1	4
March	<1	0	24	2	3
April	2	<1	10	4	<1
May	7	1	<1	5	<1
June	19	5	0	5	0
July	25	8	0	4	0
August	21	5	0	3	0
September	12	3	<1	3	0
October	3	<1	9	2	<1
November	<1	0	22	2	1
December	0	0	30	1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 80); on 2011–2025 it is September (85). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in OSAGE’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%	15%	2%	8%	-8.7–-0.3°C
February	0%	14%	3%	8%	-6.0–2.6°C
March	3%	20%	6%	18%	1.2–9.6°C
April	17%	26%	10%	31%	11.0–16.9°C
May	43%	33%	13%	40%	18.6–23.8°C
June	64%	32%	14%	37%	23.7–28.2°C
July	74%	25%	11%	24%	26.3–30.7°C
August	74%	25%	10%	24%	25.1–29.6°C
September	57%	24%	9%	26%	20.8–25.5°C
October	26%	20%	7%	18%	13.4–19.1°C
November	2%	16%	5%	13%	2.8–9.8°C
December	0%	15%	4%	10%	-5.3–2.3°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.

1900Each stripe is one year’s mean temperature against the 110-year average. Warmest: 1987. Coolest: 1951.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4870184
NOAA station: USC00136305 · OSAGE
Station distance: 1.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 43.28°, 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 OSAGE is what differs

Saint Ansgar→Riceville→Stacyville→Rudd→Mitchell→McIntire→

Or put two places side by side: Osage vs Saint Ansgar

Best time to visitOsage.