The best times to visit Denison for ideal weather are
March 12th to May 27th
September 17th to November 18th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Denison Travel Guide
Other Denison Travel Info
Weather in Denison
Average temperatures in Denison vary drastically. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 47th 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 Denison, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 98.8°F (37.1°C) with temperatures rarely dropping below 76.4°F (24.7°C) at night.
Denison Temperatures (Fahrenheit)
Denison Temperatures (Celsius)
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.
Denison Perceived Temperature (F)
Denison Perceived Temperature (C)
Average Denison 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Denison are August, January, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 2 days of significant precipitation the week of May 21st.
When can you find snow in Denison? Weather stations report no annual snow. 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 Denison.
Snow on the Ground
The graph below shows the average snow on the ground in Denison (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Denison has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is August (46.7% relative humidity), and the most humid month is May (62.1%).
Wind in Denison is usually moderate. The windiest month is April, followed by March and February. April’s average wind speed of around 9.9 knots (11.3 MPH or 18.3 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 April where average top sustained speeds reach 18.7 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Denison.
The graph below shows wind speed (max and average) in knots.
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||7.9||Gentle breeze||15.7||Significant breeze|
|Feb||8.9||Gentle breeze||16.8||Significant breeze|
|Mar||9.4||Gentle breeze||17.3||Significant breeze|
|Apr||9.9||Gentle breeze||18||Strong breeze|
|May||8.6||Gentle breeze||16.6||Significant breeze|
|Jun||8.6||Gentle breeze||16||Significant breeze|
|Jul||7||Gentle breeze||13.2||Significant breeze|
|Aug||6.8||Light breeze||13.2||Significant breeze|
|Sep||6.5||Light breeze||12.9||Significant breeze|
|Oct||7.6||Gentle breeze||14.6||Significant breeze|
|Nov||8.7||Gentle breeze||15.9||Significant breeze|
|Dec||8.1||Gentle breeze||15.4||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Denison?
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 Denison, TX, US is August, followed by October and September. 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 Denison in March. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Denison Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 87.3°F (30.7°C) and 62°F (16.7°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 6 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.
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 1 to 4 days of precipitation per month. June – August is the busiest season for tourism in Denison, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 92.3°F (33.5°C) and 61°F (16.1°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Winter (December through February)
Weather is too cold this time of year in Denison to be enjoyable for warm weather travelers. The average high during this season is between 62.6°F (17°C) and 52.2°F (11.2°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are the slowest with tourists.