Hourly Weather Forecast - Mercedes, San Luis, AR

12 AM
69°F
0%
9mph
NNW
Partly Cloudy
Humidity
45%
Feels like
69°F
Dew Point
46°F
1 AM
67°F
0%
9mph
NW
Partly Cloudy
Humidity
47%
Feels like
67°F
Dew Point
46°F
2 AM
65°F
0%
9mph
WNW
Partly Cloudy
Humidity
49%
Feels like
65°F
Dew Point
45°F
3 AM
64°F
0%
8mph
WNW
Partly Cloudy
Humidity
50%
Feels like
64°F
Dew Point
45°F
4 AM
62°F
0%
7mph
WNW
Partly Cloudy
Humidity
50%
Feels like
62°F
Dew Point
44°F
5 AM
62°F
0%
7mph
W
Partly Cloudy
Humidity
49%
Feels like
62°F
Dew Point
43°F
6 AM
62°F
0%
6mph
SW
Partly Cloudy
Humidity
46%
Feels like
62°F
Dew Point
41°F
6:06 AM
7 AM
65°F
0%
7mph
SSW
Mostly Sunny
Humidity
41%
Feels like
65°F
Dew Point
40°F
8 AM
69°F
0%
9mph
S
Sunny
Humidity
32%
Feels like
69°F
Dew Point
38°F
9 AM
74°F
0%
10mph
S
Sunny
Humidity
26%
Feels like
74°F
Dew Point
37°F
10 AM
78°F
0%
9mph
SSE
Sunny
Humidity
23%
Feels like
78°F
Dew Point
37°F
11 AM
81°F
0%
8mph
SSE
Mostly Sunny
Humidity
21%
Feels like
79°F
Dew Point
38°F
12 PM
84°F
0%
7mph
SE
Mostly Sunny
Humidity
20%
Feels like
81°F
Dew Point
38°F
1 PM
86°F
0%
7mph
SE
Sunny
Humidity
19%
Feels like
83°F
Dew Point
39°F
2 PM
88°F
0%
7mph
ESE
Sunny
Humidity
18%
Feels like
84°F
Dew Point
39°F
3 PM
90°F
0%
7mph
ESE
Mostly Sunny
Humidity
18%
Feels like
86°F
Dew Point
40°F
4 PM
90°F
0%
8mph
E
Mostly Sunny
Humidity
17%
Feels like
86°F
Dew Point
40°F
5 PM
91°F
0%
9mph
E
Mostly Sunny
Humidity
18%
Feels like
87°F
Dew Point
41°F
6 PM
90°F
0%
9mph
E
Partly Cloudy
Humidity
19%
Feels like
86°F
Dew Point
42°F
7 PM
87°F
0%
9mph
E
Sunny
Humidity
21%
Feels like
84°F
Dew Point
42°F
8 PM
83°F
0%
8mph
E
Sunny
Humidity
24%
Feels like
81°F
Dew Point
43°F
8:30 PM
9 PM
79°F
0%
8mph
E
Clear
Humidity
29%
Feels like
79°F
Dew Point
44°F
10 PM
75°F
0%
7mph
ENE
Clear
Humidity
34%
Feels like
75°F
Dew Point
45°F
11 PM
72°F
0%
7mph
ENE
Clear
Humidity
38%
Feels like
72°F
Dew Point
46°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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