Lake Forest Sea Temperature in September

Looking to find out what the average sea water temperature in Lake Forest is for September? Find out what the lowest, highest, and average water temperatures are for Lake Forest over the past 10 years.

Average water temperature in Lake Forest for September

The average, high, and low temperatures below should help you if you can swim in the water in Lake Forest in September.

Average

19.39° C

66.9° F

High

23.1° C

73.58° F

Low

10.13° C

50.23° F

Water temperature range by day in September in Lake Forest

The chart below shows the range of low and high temperatures by day for the month of September in Lake Forest.

Average daily water temperatures in Lake Forest for September

Day	Average	Low	High
1	20.77° C	17.76° C	23.1° C
2	20.68° C	16.78° C	22.86° C
3	20.42° C	15.68° C	22.67° C
4	20.13° C	15.64° C	22.59° C
5	20.13° C	16.64° C	22.54° C
6	19.84° C	16.35° C	22.45° C
7	19.57° C	16° C	21.98° C
8	19.54° C	16.93° C	21.42° C
9	19.55° C	16.84° C	21.18° C
10	19.51° C	16.06° C	21.18° C
11	19.63° C	16.48° C	21.26° C
12	19.53° C	16.25° C	21.46° C
13	19.44° C	15.93° C	21.02° C
14	19.57° C	15.98° C	21.54° C
15	19.71° C	15.89° C	21.94° C
16	19.91° C	17.01° C	22.26° C
17	20.12° C	17.6° C	22.48° C
18	20.26° C	18.05° C	22.59° C
19	20.21° C	17.76° C	22.51° C
20	20.13° C	17.78° C	22.58° C
21	19.95° C	17.47° C	22.73° C
22	19.48° C	16.57° C	22.65° C
23	18.92° C	15.24° C	21.79° C
24	18.91° C	14.69° C	21.51° C
25	18.84° C	13.95° C	21.48° C
26	18.15° C	13.17° C	21.35° C
27	17.48° C	12.79° C	20.38° C
28	16.83° C	10.3° C	20.17° C
29	16.7° C	10.13° C	20.42° C
30	16.67° C	10.35° C	20.44° C

Water temperature in September for locations near Lake Forest

Lake Bluff

United States, North America

Highland Park

United States, North America

Waukegan

United States, North America

Glencoe

United States, North America

Tower Road Beach

United States, North America

Winnetka

United States, North America

Zion

United States, North America

Wilmette

United States, North America

Winthrop Harbor

United States, North America

Evanston

United States, North America

Vardan

Russia, Asia

Kenosha

United States, North America

Crystal Lake

United States, North America

Ohio Street Beach

United States, North America

Chicago

United States, North America

Xiaomo

China, Asia

Racine

United States, North America

Wind Point

United States, North America

Whiting

United States, North America

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Lake Forest comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.