Mermentau Weather Forecast 15 Days, Weather in Mermentau Today
Current weather conditions and 15 day weather forecast for Mermentau, Louisiana, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Mermentau
| 07 April 2026 Tuesday 18.1 ° C / 64.6°F  Sunny |
Feels Like : 18.1 ° C / 64.6°F Humidity : % 45 Pressure : 1021 mb Wind Speed : 18 kmph / 11.2 miles from ENE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Mermentau, LA, USA
Weather Forecast for next 15 Days for Mermentau including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Mermentau, Louisiana state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 07 April 2026 Tuesday | Sunny |
7.8 ° C (46°F) |
27.3 ° C (81.1°F) |
17.3 ° C (63.2°F) |
% 53 | 0% | 2.1 | Sunrise:06:53 AM Sunset: 07:34 PM |
Moonrise:12:11 AM Moonset: 10:07 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday |  Partly Cloudy |
12.2 ° C (54°F) |
26 ° C (78.8°F) |
19.5 ° C (67.1°F) |
% 63 | 0% | 1.5 | Sunrise:06:51 AM Sunset: 07:34 PM |
Moonrise:01:05 AM Moonset: 10:58 AM Moon Phase ( Waning Gibbous ) |
|
| 09 April 2026 Thursday | Sunny |
13.6 ° C (56.5°F) |
28.7 ° C (83.7°F) |
20.4 ° C (68.8°F) |
% 75 | 0% | 1.5 | Sunrise:06:50 AM Sunset: 07:35 PM |
Moonrise:01:54 AM Moonset: 11:54 AM Moon Phase ( Waning Gibbous ) |
|
| 10 April 2026 Friday |  Patchy rain nearby |
13.3 ° C (55.9°F) |
27.7 ° C (81.8°F) |
20.4 ° C (68.7°F) |
% 77 | 80% | 0.7 | Sunrise:06:49 AM Sunset: 07:35 PM |
Moonrise:02:38 AM Moonset: 12:52 PM Moon Phase ( Last Quarter ) |
|
| 11 April 2026 Saturday | Patchy rain nearby |
17.3 ° C (63.2°F) |
27.5 ° C (81.5°F) |
21.8 ° C (71.3°F) |
% 77 | 88% | 0 | Sunrise:06:48 AM Sunset: 07:36 PM |
Moonrise:03:17 AM Moonset: 01:52 PM Moon Phase ( Waning Crescent ) |
|
| 12 April 2026 Sunday |  Mist |
18.9 ° C (66°F) |
28 ° C (82.5°F) |
22.9 ° C (73.3°F) |
% 78 | 0% | 5 | Sunrise:06:47 AM Sunset: 07:37 PM |
Moonrise:03:52 AM Moonset: 02:52 PM Moon Phase ( Waning Crescent ) |
|
| 13 April 2026 Monday | Patchy rain nearby |
21 ° C (69.9°F) |
27.2 ° C (81°F) |
23.9 ° C (74.9°F) |
% 80 | 89% | 5 | Sunrise:06:46 AM Sunset: 07:37 PM |
Moonrise:04:24 AM Moonset: 03:54 PM Moon Phase ( Waning Crescent ) |
|
| 14 April 2026 Tuesday | Patchy rain nearby |
20.7 ° C (69.3°F) |
27.9 ° C (82.2°F) |
23.8 ° C (74.8°F) |
% 78 | 84% | 5 | Sunrise:06:44 AM Sunset: 07:38 PM |
Moonrise:04:54 AM Moonset: 04:55 PM Moon Phase ( Waning Crescent ) |
|
| 15 April 2026 Wednesday |  Moderate rain |
15.8 ° C (60.5°F) |
20.4 ° C (68.7°F) |
18.6 ° C (65.5°F) |
% 92 | 86% | 4 | Sunrise:06:43 AM Sunset: 07:39 PM |
Moonrise:05:25 AM Moonset: 05:59 PM Moon Phase ( Waning Crescent ) |
|
| 16 April 2026 Thursday | Patchy rain nearby |
12.9 ° C (55.2°F) |
22.1 ° C (71.9°F) |
16.7 ° C (62.1°F) |
% 68 | 76% | 4 | Sunrise:06:42 AM Sunset: 07:39 PM |
Moonrise:05:56 AM Moonset: 07:05 PM Moon Phase ( Waning Crescent ) |
|
| 17 April 2026 Friday | Sunny |
9.8 ° C (49.7°F) |
23.1 ° C (73.6°F) |
16.3 ° C (61.4°F) |
% 58 | 0% | 5 | Sunrise:06:41 AM Sunset: 07:40 PM |
Moonrise:06:30 AM Moonset: 08:15 PM Moon Phase ( New Moon ) |
|
| 18 April 2026 Saturday | Sunny |
12.6 ° C (54.7°F) |
27.1 ° C (80.9°F) |
19.2 ° C (66.6°F) |
% 54 | 0% | 5 | Sunrise:06:40 AM Sunset: 07:40 PM |
Moonrise:07:10 AM Moonset: 09:28 PM Moon Phase ( Waxing Crescent ) |
|
| 19 April 2026 Sunday | Sunny |
16.6 ° C (62°F) |
27.4 ° C (81.4°F) |
21.2 ° C (70.1°F) |
% 66 | 0% | 6 | Sunrise:06:39 AM Sunset: 07:41 PM |
Moonrise:07:57 AM Moonset: 10:41 PM Moon Phase ( Waxing Crescent ) |
|
| 20 April 2026 Monday | Sunny |
17.3 ° C (63.2°F) |
28.7 ° C (83.6°F) |
22 ° C (71.6°F) |
% 67 | 0% | 6 | Sunrise:06:38 AM Sunset: 07:42 PM |
Moonrise:08:51 AM Moonset: 11:52 PM Moon Phase ( Waxing Crescent ) |
|
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