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Data Calendar for MISSISSIPPI RIVER AT ALTON IL

The calendar chart below shows the daily reported climate variables. You can click on a date to display the values for all sites for that day. Time stamps are displayed in the America/Chicago timezone. Wind speeds are in mph and temperatures in Fahrenheit. Values flagged with a (E) are estimated by the IEM.

Year:  

Month:  

 

Jun 2025Jul 2025 Aug 2025
SundayMondayTuesdayWednesday ThursdayFridaySaturday
293001
High: 86.9
Low: 73.22
Precip: M
Max Stage[ft]: 17.14		02
High: 91.4
Low: 73.22
Precip: M
Max Stage[ft]: 16.56		03
High: 94.1
Low: 76.1
Precip: M
Max Stage[ft]: 16.12		04
High: 93.74
Low: 77.72
Precip: M
Max Stage[ft]: 16.19		05
High: 93.2
Low: 78.08
Precip: M
Max Stage[ft]: 16.71
06
High: 91.04
Low: 76.64
Precip: M
Max Stage[ft]: 16.80		07
High: 91.76
Low: 75.02
Precip: M
Max Stage[ft]: 16.76		08
High: 91.94
Low: 71.96
Precip: M
Max Stage[ft]: 17.01		09
High: 90.14
Low: 71.96
Precip: M
Max Stage[ft]: 17.22		10
High: 93.56
Low: 77
Precip: M
Max Stage[ft]: 16.83		11
High: 94.28
Low: 78.08
Precip: M
Max Stage[ft]: 16.37		12
High: 87.62
Low: 70.34
Precip: M
Max Stage[ft]: 16.07
13
High: 85.64
Low: 74.3
Precip: M
Max Stage[ft]: 16.13		14
High: 82.76
Low: 72.86
Precip: M
Max Stage[ft]: 15.66		15

Precip: M		16171819
20212223242526
27282930310102

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.

Daily High/Low Plot


Description: This chart of the monthly temperature data. The bars are the observations and the dots are climatology.

Daily Rainfall


Description: This chart is of daily precipitation for the month. The red line would be an average month while the blue line and bars are observations.

Daily Average Wind Speeds


Description: This chart is of the daily average wind speeds.

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.