What is today's weather forecast for Lake Sinai, SD?

Today's forecast for Lake Sinai shows a high of 71 degrees and a low of 41 degrees Fahrenheit. Mostly sunny, with a high near 71.

What is the 7-day weather forecast for Lake Sinai, SD?

The 7-day forecast for Lake Sinai shows highs from 40 to 71 degrees and lows from 28 to 41 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Lake Sinai, SD this week?

Yes, rain is possible in Lake Sinai this week. Precipitation chances: Monday (40% chance), Wednesday (30% chance), Thursday (20% chance).

How accurate is the Lake Sinai weather forecast?

WeatherForYou provides highly accurate Lake Sinai forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Lake Sinai, SD Weather Forecast and Current Conditions

WEATHER ALERTS - Hazardous Weather Outlook

Current Conditions From Nearby Station

Switch to Metric Units

68°F
Feels Like 68°F

Humidity 37% Dew Point 41°F Wind SSW 13 MPH Barometer 29.6 in.751.8 mm

Solar Rad 260 w/m² Visibility 10 mi.

Report from a NOAA weather station 12.6 miles E of central Lake Sinai
at 2:56 PM Fri, Nov 14, 2025

Point Forecast at a Glance

FriNov 14

SatNov 15

SunNov 16

MonNov 17

40%

TueNov 18

WedNov 19

ThuNov 20

20%

7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 71°F to a low of 40°F, then recover to 44°F by week's end. Some rain possible with at least 3 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 7°F above the historical average for November. Normal highs for this period are around 42°F with lows around 22°F.

This Date in Weather History

1964 - With the help of a fresh three inch cover of snow, the temperature at Ely, NV, dipped to 15 degrees below zero to establish an all-time record low for the month of November. That record of -15 degrees was later equalled on the 19th of November in 1985.

Lake Sinai, SD 7 Day Weather Forecast Details

Friday Nov 14

Day: Mostly sunny, with a high near 71. Southwest wind around 10 mph.

Night: A chance of sprinkles after 5am. Cloudy, then becoming partly cloudy toward daybreak, with a low around 41. West southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

Saturday Nov 15

Day: Mostly sunny, with a high near 52. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Night: Partly cloudy, with a low around 28. North wind around 5 mph.

Sunday Nov 16

Day: Mostly sunny, with a high near 49. North wind 5 to 10 mph becoming southeast in the afternoon.

Night: Mostly cloudy, with a low around 33. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Monday Nov 17

Day: A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 42.

Night: A 40 percent chance of rain, mainly before midnight. Cloudy, with a low around 28.

Tuesday Nov 18

Day: Mostly cloudy, with a high near 40.

Night: Mostly cloudy, with a low around 31.

Wednesday Nov 19

Day: Partly sunny, with a high near 48.

Night: A 30 percent chance of rain. Mostly cloudy, with a low around 32.

Thursday Nov 20

Day: A 20 percent chance of rain. Partly sunny, with a high near 44.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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