The best times to visit Osage for ideal weather are

May 7th to September 30th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Osage Travel Info

Weather in Osage


Average temperatures in Osage vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 56th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Osage, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 83.1°F (28.4°C) with temperatures rarely dropping below 64.4°F (18°C) at night.

Osage Temperatures (Fahrenheit)


Osage Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Osage Perceived Temperature (F)


Osage Perceived Temperature (C)



Average Osage Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 25.3 16.7 9.5
Feb 26.4 18.3 11.3
Mar 43.9 35 28.1
Apr 58.9 47.7 39
May 71.7 60.5 50.8
Jun 79.4 69.2 60.2
Jul 82.1 72.1 63
Aug 79.9 69.7 60.9
Sep 74.5 62.4 52.9
Oct 60.9 50.1 41.3
Nov 45.3 36.2 29.1
Dec 29 22.1 15.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -3.7 -8.5 -12.5
Feb -3.1 -7.6 -11.5
Mar 6.6 1.7 -2.2
Apr 14.9 8.7 3.9
May 22.1 15.8 10.4
Jun 26.3 20.7 15.7
Jul 27.8 22.3 17.2
Aug 26.6 20.9 16.1
Sep 23.6 16.9 11.6
Oct 16.1 10.1 5.2
Nov 7.4 2.3 -1.6
Dec -1.7 -5.5 -9.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Osage are January, February, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid June with an average of 1 days of significant precipitation the week of June 18th.

When can you find snow in Osage? Weather stations report large amounts of snow likely to be deepest around February, especially close to late February and early March. The best time to ski (if at all) in Osage is often around around February 26th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Osage.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Osage (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 0% 4.1 0
Feb 0% 9.4 0
Mar 2% 6.9 0.2
Apr 10% 0 1.3
May 7% 0 1
Jun 10% 0 2.2
Jul 4% 0 0.9
Aug 7% 0 1.3
Sep 6% 0 0.7
Oct 3% 0 0.4
Nov 4% 2.4 0.5
Dec 6% 1.2 0.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 0 10.4 0
Feb 0 23.9 0
Mar 2 17.5 0.5
Apr 10 0 3.3
May 7 0 2.5
Jun 10 0 5.6
Jul 4 0 2.3
Aug 7 0 3.3
Sep 6 0 1.8
Oct 3 0 1
Nov 4 6.1 1.3
Dec 6 3 2.3


Humidity and Wind

Osage has some very humid months, with other comfortably humid months. The least humid month is April (57.4% relative humidity), and the most humid month is December (78.6%).

Wind in Osage is usually moderate. The windiest month is April, followed by May and January. April’s average wind speed of around 10.7 knots (12.3 MPH or 19.9 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 19.8 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Osage.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.7 Gentle breeze 17.6 Strong breeze
Feb 9.6 Gentle breeze 16.6 Significant breeze
Mar 9.5 Gentle breeze 16.8 Strong breeze
Apr 10.7 Gentle breeze 18.9 Strong breeze
May 9.8 Gentle breeze 18.2 Strong breeze
Jun 7.7 Gentle breeze 15.7 Significant breeze
Jul 6 Light breeze 12.6 Strong breeze
Aug 5.6 Light breeze 12 Significant breeze
Sep 6.6 Light breeze 13.2 Strong breeze
Oct 8.3 Gentle breeze 15.5 Significant breeze
Nov 9.7 Gentle breeze 16.9 Strong breeze
Dec 9.3 Gentle breeze 16.4 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 73.4%
Feb 71.4%
Mar 68%
Apr 57.4%
May 57.8%
Jun 64.2%
Jul 68.3%
Aug 71.6%
Sep 64.6%
Oct 60.7%
Nov 67.3%
Dec 78.6%


Is it Safe to Travel to Osage?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Osage, IA, US is April, followed by June and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Osage in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 54.2 in November means 54.2% of the tourists vs. April.



Overall Osage Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 76.3°F (24.6°C) and 28°F (-2.2°C) with far warmer temperatures in the later months. Rain is rare with 1 to 3 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the most precipitation with 1 to 3 days of precipitation per month. June – August is the second busiest season for tourism in Osage, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 77.4°F (25.2°C) and 36.4°F (2.4°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 1 to 2 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Osage to be enjoyable for warm weather travelers. The average high during this season is between 29°F (-1.7°C) and 24°F (-4.4°C). On average, it rains or snows a very small amount: 0 to 2 times per month. These times of year are fairly slow with tourists.


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