Hourly Weather Forecast - Mercedes, San Luis, AR

12 AM
69°F
0%
6mph
ENE
Clear
Humidity
44%
Feels like
69°F
Dew Point
47°F
1 AM
67°F
0%
6mph
NE
Clear
Humidity
49%
Feels like
67°F
Dew Point
47°F
2 AM
65°F
0%
6mph
NNE
Clear
Humidity
56%
Feels like
65°F
Dew Point
49°F
3 AM
63°F
0%
5mph
N
Clear
Humidity
62%
Feels like
63°F
Dew Point
50°F
4 AM
62°F
0%
5mph
NNW
Clear
Humidity
65%
Feels like
62°F
Dew Point
50°F
5 AM
61°F
0%
5mph
NNW
Clear
Humidity
65%
Feels like
61°F
Dew Point
49°F
6 AM
62°F
0%
6mph
NNW
Clear
Humidity
63%
Feels like
62°F
Dew Point
49°F
6:07 AM
7 AM
66°F
0%
6mph
N
Mostly Sunny
Humidity
59%
Feels like
66°F
Dew Point
51°F
8 AM
73°F
0%
6mph
N
Partly Cloudy
Humidity
50%
Feels like
73°F
Dew Point
53°F
9 AM
80°F
0%
8mph
N
Partly Cloudy
Humidity
42%
Feels like
80°F
Dew Point
55°F
10 AM
86°F
0%
9mph
N
Partly Cloudy
Humidity
33%
Feels like
84°F
Dew Point
53°F
11 AM
89°F
0%
9mph
N
Partly Cloudy
Humidity
30%
Feels like
87°F
Dew Point
53°F
12 PM
91°F
0%
10mph
N
Partly Cloudy
Humidity
27%
Feels like
89°F
Dew Point
52°F
1 PM
93°F
0%
10mph
N
Partly Cloudy
Humidity
24%
Feels like
90°F
Dew Point
51°F
2 PM
94°F
0%
10mph
N
Partly Cloudy
Humidity
23%
Feels like
92°F
Dew Point
51°F
3 PM
95°F
0%
10mph
N
Partly Cloudy
Humidity
22%
Feels like
92°F
Dew Point
50°F
4 PM
96°F
0%
9mph
N
Partly Cloudy
Humidity
21%
Feels like
93°F
Dew Point
50°F
5 PM
96°F
0%
9mph
N
Partly Cloudy
Humidity
20%
Feels like
92°F
Dew Point
48°F
6 PM
94°F
10%
9mph
N
Partly Cloudy
Humidity
21%
Feels like
91°F
Dew Point
49°F
7 PM
92°F
10%
9mph
SE
Partly Cloudy
Humidity
24%
Feels like
89°F
Dew Point
50°F
8 PM
87°F
10%
8mph
E
Mostly Cloudy
Humidity
30%
Feels like
85°F
Dew Point
52°F
8:30 PM
9 PM
82°F
40%
7mph
SE
40% Chance Rain Showers
Humidity
37%
Feels like
81°F
Dew Point
54°F
10 PM
78°F
40%
7mph
SW
40% Chance Rain Showers
Humidity
47%
Feels like
78°F
Dew Point
56°F
11 PM
74°F
60%
8mph
SE
60% Chance Rain Showers
Humidity
56%
Feels like
74°F
Dew Point
57°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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