Hourly Weather Forecast - Mercedes, San Luis, AR

12 AM
71°F
10%
7mph
ENE
Partly Cloudy
Humidity
75%
Feels like
71°F
Dew Point
62°F
1 AM
69°F
10%
7mph
NE
Partly Cloudy
Humidity
79%
Feels like
69°F
Dew Point
62°F
2 AM
68°F
10%
6mph
NE
Partly Cloudy
Humidity
83%
Feels like
68°F
Dew Point
62°F
3 AM
67°F
30%
5mph
NE
30% Chance Rain Showers
Humidity
87%
Feels like
67°F
Dew Point
63°F
4 AM
66°F
30%
4mph
NE
30% Chance Rain Showers
Humidity
91%
Feels like
66°F
Dew Point
63°F
5 AM
65°F
30%
4mph
ESE
30% Chance of Light Rain
Humidity
95%
Feels like
65°F
Dew Point
64°F
6 AM
65°F
30%
4mph
SSE
30% Chance of Light Rain
Humidity
98%
Feels like
65°F
Dew Point
64°F
6:08 AM
7 AM
67°F
30%
5mph
S
30% Chance of Light Rain
Humidity
96%
Feels like
67°F
Dew Point
65°F
8 AM
70°F
30%
6mph
SSW
30% Chance Rain Showers
Humidity
86%
Feels like
70°F
Dew Point
66°F
9 AM
74°F
50%
7mph
SSW
50% Chance Rain Showers
Humidity
75%
Feels like
74°F
Dew Point
66°F
10 AM
78°F
50%
9mph
SSW
50% Chance Rain Showers
Humidity
66%
Feels like
78°F
Dew Point
65°F
11 AM
79°F
50%
9mph
SSW
50% Chance Rain Showers
Humidity
61%
Feels like
79°F
Dew Point
65°F
12 PM
81°F
60%
9mph
S
60% Chance Rain Showers
Humidity
57%
Feels like
82°F
Dew Point
64°F
1 PM
82°F
60%
9mph
S
60% Chance Rain Showers
Humidity
54%
Feels like
83°F
Dew Point
64°F
2 PM
83°F
60%
9mph
SSE
60% Chance of Light Rain
Humidity
52%
Feels like
84°F
Dew Point
63°F
3 PM
83°F
60%
9mph
SE
60% Chance Rain Showers
Humidity
50%
Feels like
84°F
Dew Point
63°F
4 PM
83°F
50%
9mph
SE
50% Chance Rain Showers
Humidity
49%
Feels like
84°F
Dew Point
63°F
5 PM
83°F
40%
10mph
SE
40% Chance Rain Showers
Humidity
49%
Feels like
84°F
Dew Point
62°F
6 PM
82°F
30%
10mph
SE
30% Chance Rain Showers
Humidity
50%
Feels like
83°F
Dew Point
61°F
7 PM
80°F
40%
10mph
SE
40% Chance Rain Showers
Humidity
53%
Feels like
80°F
Dew Point
61°F
8 PM
76°F
30%
9mph
SE
30% Chance Rain Showers
Humidity
59%
Feels like
76°F
Dew Point
61°F
8:31 PM
9 PM
73°F
30%
7mph
SE
30% Chance Rain Showers
Humidity
67%
Feels like
73°F
Dew Point
61°F
10 PM
70°F
30%
6mph
SE
30% Chance Rain Showers
Humidity
76%
Feels like
70°F
Dew Point
62°F
11 PM
67°F
30%
5mph
ESE
30% Chance Rain Showers
Humidity
82%
Feels like
67°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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