The best times to visit Altamont for ideal weather are

April 9th to June 17th

or

August 6th to October 21st

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

 

 


Other Altamont Travel Info

Weather in Altamont

Temperature

Average temperatures in Altamont vary drastically. 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 46th 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 Altamont, 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 88.8°F (31.6°C) with temperatures rarely dropping below 68.3°F (20.2°C) at night.

Altamont Temperatures (Fahrenheit)

Key
High
Average
Low

Altamont Temperatures (Celsius)

Key
High
Average
Low

“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.

Altamont Perceived Temperature (F)

Key
High
Average
Low

Altamont Perceived Temperature (C)

Key
High
Average
Low

 

Average Altamont 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 38.1 29.4 22.3
Feb 41.5 32.1 25.3
Mar 57.1 46.5 38.4
Apr 67.4 55.4 45.7
May 76.2 65.5 55.9
Jun 85.5 74.5 64.6
Jul 88 77 67.4
Aug 87 75.2 64.7
Sep 79.2 67 57.2
Oct 68.4 56.1 45.9
Nov 55.9 45.2 36.6
Dec 41.4 33.9 27.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 3.4 -1.4 -5.4
Feb 5.3 0.1 -3.7
Mar 13.9 8.1 3.6
Apr 19.7 13 7.6
May 24.6 18.6 13.3
Jun 29.7 23.6 18.1
Jul 31.1 25 19.7
Aug 30.6 24 18.2
Sep 26.2 19.4 14
Oct 20.2 13.4 7.7
Nov 13.3 7.3 2.6
Dec 5.2 1.1 -2.3

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Altamont are August, October, 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 mid May. For example, on the week of May 14th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid February with an average of 2 days of significant precipitation the week of February 19th.

When can you find snow in Altamont? 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 Altamont.

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 9% 0 1.7
Feb 14% 0 1.7
Mar 7% 0 1.4
Apr 9% 0 2.2
May 7% 0 0.8
Jun 10% 0 1.5
Jul 7% 0 2
Aug 5% 0 0.8
Sep 7% 0 1.7
Oct 5% 0 0.7
Nov 6% 0 1.6
Dec 7% 0 0.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 4.3
Feb 14 0 4.3
Mar 7 0 3.6
Apr 9 0 5.6
May 7 0 2
Jun 10 0 3.8
Jul 7 0 5.1
Aug 5 0 2
Sep 7 0 4.3
Oct 5 0 1.8
Nov 6 0 4.1
Dec 7 0 2.3

 

Humidity and Wind

Altamont has some very humid months, with other comfortably humid months. The least humid month is April (55.9% relative humidity), and the most humid month is December (72.8%).

Wind in Altamont is usually calm. The windiest month is April, followed by January and February. April’s average wind speed of around 7.3 knots (8.4 MPH or 13.6 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 late February and early March where average top sustained speeds reach 16 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Key
Avg. Relative Humidity

Wind

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

Key
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 7.3 Gentle breeze 14.3 Significant breeze
Feb 7.1 Gentle breeze 14.7 Significant breeze
Mar 7 Gentle breeze 14.3 Significant breeze
Apr 7.3 Gentle breeze 15.5 Significant breeze
May 5.2 Light breeze 12.6 Significant breeze
Jun 4.6 Light breeze 12.6 Significant breeze
Jul 3.5 Barely noticeable 10.3 Significant breeze
Aug 3.5 Barely noticeable 10.1 Gentle breeze
Sep 3.8 Barely noticeable 10.4 Significant breeze
Oct 5.5 Light breeze 12.3 Significant breeze
Nov 5.9 Light breeze 12.8 Significant breeze
Dec 6.9 Light breeze 14.1 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 66.8%
Feb 65.3%
Mar 59.2%
Apr 55.9%
May 60.6%
Jun 60.7%
Jul 63.7%
Aug 62.6%
Sep 63%
Oct 57.3%
Nov 60.5%
Dec 72.8%

 

Is it Safe to Travel to Altamont?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Dec 04, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Altamont, IL, US is July, followed by June and August. 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 Altamont 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

Key
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 38.7 in November means 38.7% of the tourists vs. July.

 

 

Overall Altamont Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 82.4°F (28°C) and 46.5°F (8.1°C) with warmer temperatures in the later months. Rain is rare with 2 to 3 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 2 to 3 days of precipitation per month. June – August is the busiest season for tourism in Altamont, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 80.8°F (27.1°C) and 47.2°F (8.4°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: approximately 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 Altamont to be enjoyable for warm weather travelers. The average high during this season is between 46.5°F (8.1°C) and 35.5°F (1.9°C). On average, it rains or snows a smalll amount: 2 to 4 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› the United States › Altamont, IL, US