The best times to visit Hennessey for ideal weather are

April 16th to May 27th


September 10th to October 28th

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



Other Hennessey Travel Info

Weather in Hennessey


Average temperatures in Hennessey vary drastically. Considering humidity, temperatures feel nice between summer and winter. The temperatures feel cold for about half the year, and too hot for part of the year with a low chance of precipitation most of the year. The area is less temperate than some — in the 33rd 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 Hennessey, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 96.6°F (35.9°C) with temperatures rarely dropping below 72.2°F (22.3°C) at night.

Hennessey Temperatures (Fahrenheit)


Hennessey 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.

Hennessey Perceived Temperature (F)


Hennessey Perceived Temperature (C)



Average Hennessey 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 49.3 35.3 25
Feb 51.3 37.8 27.5
Mar 64.4 50.1 39.5
Apr 72.7 58.5 47.5
May 80.8 68.1 57.4
Jun 91.5 79.3 68.4
Jul 94.5 82.3 71.2
Aug 94.3 81.4 70.1
Sep 86 73.1 62.4
Oct 74 60.5 49.5
Nov 61.6 48.2 37.6
Dec 48.8 36.7 27.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 9.6 1.8 -3.9
Feb 10.7 3.2 -2.5
Mar 18 10.1 4.2
Apr 22.6 14.7 8.6
May 27.1 20.1 14.1
Jun 33.1 26.3 20.2
Jul 34.7 27.9 21.8
Aug 34.6 27.4 21.2
Sep 30 22.8 16.9
Oct 23.3 15.8 9.7
Nov 16.4 9 3.1
Dec 9.3 2.6 -2.4



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Hennessey are January, December, and then November. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late January. For example, on the week of January 22nd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid August with an average of 2 days of significant precipitation the week of August 13th.

When can you find snow in Hennessey? Weather stations report a good amount of seasonal snow likely to be deepest around February, especially close to mid March. The best time to ski (if at all) in Hennessey is often around around March 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 Hennessey.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 4% 2.2 0.5
Feb 10% 3.7 1.5
Mar 12% 2.5 2.3
Apr 18% 0 3.1
May 22% 0 5.1
Jun 19% 0 6
Jul 14% 0 3.2
Aug 16% 0 3.2
Sep 11% 0 1.9
Oct 11% 0 3.1
Nov 8% 1.2 1.8
Dec 8% 1.8 1.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 4 5.6 1.3
Feb 10 9.4 3.8
Mar 12 6.4 5.8
Apr 18 0 7.9
May 22 0 13
Jun 19 0 15.2
Jul 14 0 8.1
Aug 16 0 8.1
Sep 11 0 4.8
Oct 11 0 7.9
Nov 8 3 4.6
Dec 8 4.6 2.8


Humidity and Wind

Hennessey has some high humidity months, with other comfortably humid months. The least humid month is August (52.8% relative humidity), and the most humid month is December (64.1%).

Wind in Hennessey is usually moderate. The windiest month is April, followed by March and June. April’s average wind speed of around 12.1 knots (13.9 MPH or 22.4 KPH) is considered “a moderate 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 22.1 knots, which is considered a strong breeze.

Relative Humidity (%)

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

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 10.1 Gentle breeze 17.6 Strong breeze
Feb 10.4 Gentle breeze 17.8 Strong breeze
Mar 11.3 Significant breeze 19.2 Strong breeze
Apr 12.1 Significant breeze 20.6 Strong breeze
May 10.7 Gentle breeze 19.1 Strong breeze
Jun 11.2 Significant breeze 19.7 Strong breeze
Jul 9.1 Gentle breeze 16.1 Strong breeze
Aug 8.9 Gentle breeze 16 Significant breeze
Sep 9.2 Gentle breeze 15.9 Strong breeze
Oct 9.9 Gentle breeze 16.9 Significant breeze
Nov 10.7 Gentle breeze 18.1 Strong breeze
Dec 9.8 Gentle breeze 16.8 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 54%
Feb 60.1%
Mar 57.4%
Apr 56.2%
May 61.2%
Jun 56.8%
Jul 53%
Aug 52.8%
Sep 55.7%
Oct 54%
Nov 55.3%
Dec 64.1%


Is it Safe to Travel to Hennessey?

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 Hennessey, OK, US is June, followed by May and July. 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 Hennessey 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 38.9 in November means 38.9% of the tourists vs. June.



Overall Hennessey Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 87.6°F (30.9°C) and 54.8°F (12.7°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 7 days of significant precipitation per month. Spring is the second 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 quite warm. These months see moderate precipitation with 4 to 6 days of precipitation per month. June – August is the busiest season for tourism in Hennessey, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 89.2°F (31.8°C) and 54.7°F (12.6°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 2 to 3 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 too cold this time of year in Hennessey to be enjoyable for warm weather travelers. The average high during this season is between 54.8°F (12.7°C) and 46.3°F (7.9°C). On average, it rains or snows a smalll amount: 1 to 3 times per month. These times of year are fairly slow with tourists.


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