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[ALN] ALTON/ST LOUIS R [1972-]
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Data Calendar for ALTON/ST LOUIS R

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:  

 

Jul 2025Aug 2025 Sep 2025
SundayMondayTuesdayWednesday ThursdayFridaySaturday
272829303101
High: 78.8
Low: 62.6
Precip: M
Avg Wind: NE @ 7.6
Gust:
NNE @ 17
(1:50 PM)
RH% Min/Max: 45-94
Feel Min/Max: 63 to 79		02
High: 77
Low: 59
Precip: M
Avg Wind: NE @ 6.4
Gust:
WNW @ 21
(1:50 PM)
RH% Min/Max: 41-94
Feel Min/Max: 59 to 77
03
High: 78.8
Low: 56.7
Precip: M
Avg Wind: NE @ 4.3
RH% Min/Max: 45-94
Feel Min/Max: 57 to 79		04
High: 80.6
Low: 62.6
Precip: M
Avg Wind: N @ 4.6
RH% Min/Max: 62-94
Feel Min/Max: 63 to 84		05
High: 82.4
Low: 64.2
Precip: M
Avg Wind: ENE @ 3.5
RH% Min/Max: 58-97
Feel Min/Max: 64 to 85		06
High: 87.8
Low: 64.4
Precip: M
Avg Wind: SE @ 4.4
RH% Min/Max: 52-98
Feel Min/Max: 64 to 93		07
High: 87.8
Low: 68.5
Precip: M
Avg Wind: WSW @ 4.7
Gust:
SSW @ 22
(12:50 PM)
RH% Min/Max: 55-97
Feel Min/Max: 68 to 94		08
High: 91.4
Low: 69.8
Precip: M
Avg Wind: S @ 7.1
RH% Min/Max: 49-95
Feel Min/Max: 70 to 99		09
High: 91.4
Low: 69.6
Precip: M
Avg Wind: S @ 8.1
Gust:
SSW @ 18
(4:50 PM)
RH% Min/Max: 56-100
Feel Min/Max: 70 to 103
10
High: 89.6
Low: 69.8
Precip: M
Avg Wind: SSW @ 7.2
Gust:
SW @ 32
(4:50 PM)
RH% Min/Max: 55-100
Feel Min/Max: 70 to 96		11
High: 89.6
Low: 69
Precip: M
Avg Wind: S @ 5.0
RH% Min/Max: 52-97
Feel Min/Max: 69 to 96		12
High: 89.6
Low: 69.8
Precip: M
Gust:
N @ 36
(1:50 PM)
RH% Min/Max: 56-97
Feel Min/Max: 70 to 98		13

Precip: M		14

Precip: M		1516
17181920212223
24252627282930
31010203040506

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.