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Water temperature in Shelbyville (IL) in December

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Is it warm enough to swim in Shelbyville in December? Average water temperature in Shelbyville in December is 39.7°F and therefore is not suitable for comfortable swimming. The warmest water in Shelbyville in December is 46.4°F, and the coldest is 37.4°F. To find out the water temperature today and in the coming days, go to Current water temperature in Shelbyville

Changes water temperature in Shelbyville in December 2025, 2024

To get an accurate forecast for the water temperature in Shelbyville for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
December 1 39.2°F
December 2 39.2°F
December 3 39.2°F
December 4 39.2°F
December 5 39.2°F
December 639.2°F39.2°F
December 739.2°F39.2°F
December 839.2°F39.2°F
December 939.2°F39.2°F
December 1039.2°F39.2°F
December 1139.2°F39.2°F
December 1239.2°F39.2°F
December 1339.2°F39.2°F
December 1437.4°F39.2°F
December 1537.4°F39.2°F
Day 2025 2024
December 1635.6°F39.2°F
December 1735.6°F39.2°F
December 1835.6°F39.2°F
December 1937.4°F39.2°F
December 2035.6°F39.2°F
December 2135.6°F39.2°F
December 2235.6°F39.2°F
December 2335.6°F39.2°F
December 2437.4°F39.2°F
December 2537.4°F39.2°F
December 2637.4°F39.2°F
December 2739.2°F39.2°F
December 2839.2°F39.2°F
December 2939.2°F41°F
December 3039.2°F41°F
December 3137.4°F41°F

Average water temperature in Shelbyville in December over a decade

20162017201820192020
38.3°F39.6°F38.1°F
20212022202320242025
41.9°F39.4°F41°F39.4°F

Shelbyville water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in December?

Want to know where the water temperature in December is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Shelbyville is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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