TODAY JUL21
TEMPERATURE63
HUMIDITY97
PRESSURE30.05
WIND COND.310 4.7
  • 7761Sat
  • 7964Sun30%
  • 8059Mon50%
  • 7961Tue
  • 7758Wed40%
daynightWeather update from Brookings, Brookings Municipal Airport at

Sinai Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January-29°F46°F16°F0.0"
February-24°F61°F18°F0.1"
March-17°F70°F31°F0.3"
April12°F88°F45°F1.0"
May21°F95°F57°F2.8"
June39°F91°F67°F3.2"
July45°F99°F72°F2.7"
August39°F91°F68°F1.9"
September30°F90°F61°F1.5"
October18°F86°F46°F1.5"
November1°F73°F34°F0.1"
December-17°F55°F16°F0.1"

Did you know?

  • The highest monthly average temperature in Sinai for July is 72 degrees.
  • The lowest monthly average temperature in Sinai for January is 16 degrees.
  • The most monthly precipitation in Sinai occurs in June with 3.2 inches.
  • The air quality index in Sinai is 29% better than the national average.
  • The pollution index in Sinai is 76% better than the national average.

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Compare Sinai, SD Weather To Other Cities

Sinai air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSinaiSouth DakotaNational
Air quality index353650
Pollution index1,169,770463,9835,066,862

Sinai air quality information

MeasurementTotal
Days measured365
Days with good air quality333
Days with moderate air quality32
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Sinai air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.000%

Average monthly Sinai temperature with heat index

Sinai monthly precipitation with daily maximum

Sinai monthly snow depth with daily maximum

Sinai monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bruce, SD1563530%
Ramona, SD1563530%
Hetland, SD353530%
Volga, SD1,8833530%
Arlington, SD1,0173530%
Sinai, SD1013530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Kohls Ranch, AZ1017448%
Vernon, CA1017448%
New Buffalo, PA101524%
Angelica, WI1014020%
Windom, KS1013922%
Sinai, SD1013530%
Source: The Sinai, SD weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.