The best times to visit Savanna for ideal weather are

April 30th to October 7th

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

 

 


Other Savanna Travel Info

Weather in Savanna

Temperature

Average temperatures in Savanna 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 45th 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 Savanna, 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 86.9°F (30.5°C) with temperatures rarely dropping below 64.6°F (18.1°C) at night.

Savanna Temperatures (Fahrenheit)

Key
High
Average
Low

Savanna 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.

Savanna Perceived Temperature (F)

Key
High
Average
Low

Savanna Perceived Temperature (C)

Key
High
Average
Low

 

Average Savanna 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

MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
Jan30.821.312.6
Feb31.922.814.4
Mar50.639.330.6
Apr63.951.140.4
May75.963.251.5
Jun82.871.561.2
Jul85.674.163.1
Aug84.172.361.6
Sep78.66553.7
Oct6552.742.4
Nov50.640.131.2
Dec35.727.820.1

Show Celsius

MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
Jan-0.7-5.9-10.8
Feb-0.1-5.1-9.8
Mar10.34.1-0.8
Apr17.710.64.7
May24.417.310.8
Jun28.221.916.2
Jul29.823.417.3
Aug28.922.416.4
Sep25.918.312.1
Oct18.311.55.8
Nov10.34.5-0.4
Dec2.1-2.3-6.6

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Savanna are January, October, and then July. 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 early to mid June with an average of 2 days of significant precipitation the week of June 11th.

When can you find snow in Savanna? 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 Savanna.

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
Jan4%00.5
Feb8%00.7
Mar10%01.3
Apr16%02.9
May13%02
Jun22%03.8
Jul7%01.1
Aug9%01
Sep9%01.2
Oct6%00.9
Nov7%00.9
Dec13%01.8

Show Centimeters

MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
Jan401.3
Feb801.8
Mar1003.3
Apr1607.4
May1305.1
Jun2209.7
Jul702.8
Aug902.5
Sep903
Oct602.3
Nov702.3
Dec1304.6

 

Humidity and Wind

Savanna has some very humid months, with other moderately humid months on the other side of the year. The least humid month is April (47.8% relative humidity), and the most humid month is December (73.2%).

Wind in Savanna is usually calm. The windiest month is April, followed by November and May. April’s average wind speed of around 8.2 knots (9.5 MPH or 15.2 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 April where average top sustained speeds reach 16.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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.

MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
Jan6.7Light breeze13.3Significant breeze
Feb6.7Light breeze13.3Significant breeze
Mar6.9Light breeze14.1Significant breeze
Apr8.2Gentle breeze16.1Significant breeze
May7Gentle breeze14.8Significant breeze
Jun5.5Light breeze13.5Significant breeze
Jul4.5Light breeze11.2Significant breeze
Aug4.2Light breeze11Significant breeze
Sep4.9Light breeze11.6Significant breeze
Oct6Light breeze12.9Significant breeze
Nov7Gentle breeze13.8Significant breeze
Dec6.4Light breeze12.8Significant breeze

Show Relative Humidity by Month

MonthAvg. Relative Humidity
Jan65.8%
Feb63.2%
Mar55.9%
Apr47.8%
May49.1%
Jun58.2%
Jul60.8%
Aug63.2%
Sep59.9%
Oct58.6%
Nov61.6%
Dec73.2%

 

Is it Safe to Travel to Savanna?

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 Savanna, IL, US is March, followed by July and October. 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 Savanna in December. 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 63.1 in December means 63.1% of the tourists vs. March.

 

 

Overall Savanna Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 79.9°F (26.6°C) and 36°F (2.2°C) with far warmer temperatures in the later months. Rain is somewhat common with 3 to 5 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 comfortable. These months see moderate precipitation with 2 to 7 days of precipitation per month. June – August is the busiest season for tourism in Savanna, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 82.5°F (28.1°C) and 42.2°F (5.7°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Savanna to be enjoyable for warm weather travelers. The average high during this season is between 36.2°F (2.3°C) and 28.6°F (-1.9°C). On average, it rains or snows a smalll amount: 1 to 4 times per month. These times of year are the slowest with tourists.

 

Best Times to Travelthe United States › Savanna, IL, US