Hourly Weather Forecast - Mercedes, San Luis, AR

12 AM
71°F
70%
9mph
SW
70% Chance Rain Showers
Humidity
65%
Feels like
71°F
Dew Point
58°F
1 AM
69°F
70%
9mph
S
70% Chance of Storms
Humidity
71%
Feels like
69°F
Dew Point
59°F
2 AM
67°F
60%
9mph
SE
60% Chance Rain Showers
Humidity
77%
Feels like
67°F
Dew Point
59°F
3 AM
65°F
60%
9mph
NNE
60% Chance Rain Showers
Humidity
84%
Feels like
65°F
Dew Point
60°F
4 AM
64°F
40%
7mph
NNW
40% Chance Rain Showers
Humidity
88%
Feels like
64°F
Dew Point
60°F
5 AM
63°F
30%
6mph
WNW
30% Chance Rain Showers
Humidity
90%
Feels like
63°F
Dew Point
60°F
6 AM
64°F
30%
4mph
SSW
30% Chance Rain Showers
Humidity
90%
Feels like
64°F
Dew Point
60°F
6:07 AM
7 AM
65°F
30%
4mph
S
30% Chance Rain Showers
Humidity
86%
Feels like
65°F
Dew Point
61°F
8 AM
69°F
30%
4mph
SSE
30% Chance Rain Showers
Humidity
78%
Feels like
69°F
Dew Point
62°F
9 AM
74°F
30%
5mph
SSE
30% Chance Rain Showers
Humidity
69%
Feels like
74°F
Dew Point
63°F
10 AM
78°F
30%
6mph
SE
30% Chance Rain Showers
Humidity
57%
Feels like
78°F
Dew Point
61°F
11 AM
80°F
30%
8mph
SE
30% Chance Rain Showers
Humidity
51%
Feels like
81°F
Dew Point
61°F
12 PM
83°F
30%
9mph
SE
30% Chance Rain Showers
Humidity
45%
Feels like
83°F
Dew Point
60°F
1 PM
85°F
30%
9mph
ESE
30% Chance Rain Showers
Humidity
41%
Feels like
84°F
Dew Point
59°F
2 PM
87°F
10%
9mph
ESE
Partly Cloudy
Humidity
39%
Feels like
87°F
Dew Point
59°F
3 PM
89°F
10%
10mph
ESE
Partly Cloudy
Humidity
35%
Feels like
88°F
Dew Point
58°F
4 PM
90°F
10%
11mph
ESE
Mostly Sunny
Humidity
34%
Feels like
88°F
Dew Point
58°F
5 PM
89°F
20%
11mph
ESE
Mostly Sunny
Humidity
34%
Feels like
88°F
Dew Point
57°F
6 PM
88°F
10%
12mph
ESE
Mostly Sunny
Humidity
36%
Feels like
87°F
Dew Point
58°F
7 PM
86°F
10%
11mph
ESE
Mostly Sunny
Humidity
40%
Feels like
85°F
Dew Point
58°F
8 PM
82°F
10%
10mph
ESE
Mostly Sunny
Humidity
48%
Feels like
83°F
Dew Point
61°F
8:31 PM
9 PM
78°F
20%
9mph
ESE
Mostly Clear
Humidity
58%
Feels like
78°F
Dew Point
62°F
10 PM
75°F
20%
8mph
E
Mostly Clear
Humidity
65%
Feels like
75°F
Dew Point
63°F
11 PM
73°F
20%
8mph
E
Mostly Clear
Humidity
69%
Feels like
73°F
Dew Point
62°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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