Weather Alert
Mortimer Slough Weather Warning NWS WEATHER ALERT FOR THE MORTIMER SLOUGH, SD AREA - Issued: 743 PM CDT Fri Sep 18 2026 Mortimer Slough Weather Warning

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Mortimer Slough, SD Weather - Hour by Hour Forecast

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Mortimer Slough, SD Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 61°F16°C, dew point 60°F16°C, humidity 96%. Wind direction is E at 8 mph13 km/h with visibility of 8 mi13 km. Barometric pressure is 30 in1016 mb.
Tonight - Cloudy. Patchy fog this evening, then areas of fog after midnight. Near steady temperature around 60. Northeast winds 5 to 10 mph... Full Forecast
Saturday - Areas of fog in the morning. Cloudy. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph... Full Forecast

Mortimer Slough Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 18
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Mortimer Slough, SD Hourly Weather - Cloudy - 8:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 9:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 10:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 11:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 12:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 1:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 2:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 3:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 4:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 5:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 6:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 7:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 8:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 9:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 10:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 11:00 AM Mortimer Slough, SD Hourly Weather - Cloudy - 12:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 1:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 2:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 3:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 4:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 5:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 6:00 PM Mortimer Slough, SD Hourly Weather - Cloudy - 7:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
60°F16°C 59°F15°C 59°F15°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 55°F13°C 56°F13°C 56°F13°C 57°F14°C 59°F15°C 60°F16°C 61°F16°C 61°F16°C 62°F17°C 61°F16°C 60°F16°C 59°F15°C
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4% 4% 4% 4% 4% 4% 3% 3% 3% 3% 3% 3% 6% 6% 6% 6% 6% 6% 22% 22% 22% 22% 22% 22%
59°F15°C 59°F15°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 55°F13°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 54°F12°C 55°F13°C 55°F13°C 55°F13°C 55°F13°C 55°F13°C 55°F13°C 55°F13°C 55°F13°C
96% 100% 96% 93% 96% 93% 96% 93% 96% 96% 96% 96% 96% 93% 93% 90% 87% 84% 81% 81% 78% 81% 84% 87%
NE NE NE NE NE NNE NNE NNE NNE NE NE NE NE NE ENE ENE ENE ENE ENE ENE ENE ENE ENE ENE
10 mph 8 mph 8 mph 8 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 7 mph 7 mph 7 mph 12 mph 12 mph 12 mph 9 mph 9 mph 9 mph 10 mph 10 mph 10 mph 9 mph 9 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KBKX model statistics.

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Prob Precip % = Probability of Precipitation.

Mortimer Slough 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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