TODAY SEP25
TEMPERATURE79
HUMIDITY67
PRESSURE29.92
WIND COND.190 12.8
  • 6845Wed
  • 7149Thu
  • 7450Fri
  • 6949Sat
  • 7157Sun
daynightWeather update from Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal at
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Saybrook Average Temperature

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
January22°F35°F28°F4.7"
February20°F34°F26°F2.5"
March33°F54°F42°F4.9"
April42°F65°F52°F4.6"
May53°F77°F65°F3.7"
June64°F86°F74°F4.4"
July65°F86°F75°F4.9"
August66°F88°F76°F3.8"
September59°F85°F70°F4.4"
October48°F70°F57°F5.3"
November34°F53°F42°F5.3"
December20°F33°F26°F2.9"

Did you know?

  • The highest monthly average temperature in Saybrook for August is 76 degrees.
  • The lowest monthly average temperature in Saybrook for February is 26 degrees.
  • The most monthly precipitation in Saybrook occurs in October with 5.3 inches.
  • The air quality index in Saybrook is 27% better than the national average.
  • The pollution index in Saybrook is 52% worse than the national average.

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Saybrook 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.
IndexSaybrookIllinoisNational
Air quality index364150
Pollution index7,745,2003,347,2955,066,862

Saybrook air quality information

MeasurementTotal
Days measured362
Days with good air quality309
Days with moderate air quality53
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Saybrook air quality information

PollutantTotal
Arsenic0.030%
Benzene0.070%
Carbon Tetrachloride0.020%
Lead0.860%
Mercury0.210%

Average monthly Saybrook temperature with heat index

Saybrook monthly precipitation with daily maximum

Saybrook monthly snow depth with daily maximum

Saybrook monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Anchor, IL1423628%
Cooksville, IL1703628%
Fisher, IL1,9893628%
Mansfield, IL8483628%
Arrowsmith, IL2673628%
Saybrook, IL7903628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Gallipolis Ferry, WV7903824%
Waterproof, LA7905612%
New Site, AL7903824%
Melrose, OR7903040%
Gainesville, MO7903432%
Saybrook, IL7903628%
Source: The Saybrook, IL 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.