TODAY OCT15
TEMPERATURE21
HUMIDITY88
PRESSURE30.2
WIND COND.160 9.2
  • 5637Mon
  • 6236Tue
  • 6538Wed
  • 6337Thu
  • 5936Fri
daynightWeather update from Miles City, Frank Wiley Field Airport at
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Forsyth 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
January11°F33°F20°F0.2"
February14°F37°F24°F0.2"
March25°F52°F36°F0.6"
April34°F62°F46°F1.6"
May43°F70°F56°F3.5"
June53°F82°F67°F2.6"
July61°F93°F76°F1.1"
August58°F90°F73°F1.1"
September48°F79°F62°F1.0"
October36°F62°F47°F1.0"
November23°F48°F34°F0.3"
December11°F32°F20°F0.2"

Did you know?

  • The highest monthly average temperature in Forsyth for July is 76 degrees.
  • The lowest monthly average temperature in Forsyth for December is 20 degrees.
  • The most monthly precipitation in Forsyth occurs in May with 3.5 inches.
  • The air quality index in Forsyth is 51% better than the national average.
  • The pollution index in Forsyth is 88% better than the national average.

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Compare Forsyth, MT Weather To Other Cities

Forsyth 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.
IndexForsythMontanaNational
Air quality index243450
Pollution index562,118685,9255,066,862

Forsyth air quality information

MeasurementTotal
Days measured365
Days with good air quality340
Days with moderate air quality24
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

Forsyth air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.002%
Mercury0.000%

Average monthly Forsyth temperature with heat index

Forsyth monthly precipitation with daily maximum

Forsyth monthly snow depth with daily maximum

Forsyth monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Rosebud, MT1053628%
Forsyth, MT1,8372452%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
South Temple, PA1,8374510%
Loxley, AL1,8373432%
Lacon, IL1,837484%
Senath, MO1,8373628%
Osgood, IN1,8373236%
Forsyth, MT1,8372452%
Source: The Forsyth, MT 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.