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August Weather in Big Timber, United States

Last updated: June 24, 2025

In Big Timber, United States, the average temperature in August hovers around 18°C (65°F), providing a pleasant climate for outdoor activities. However, be prepared for a range that can drop to a chilly 3°C (38°F) at night or soar to a warm 34°C (94°F) during the day. Expect about 39 mm (1.5 in) of precipitation over the course of 7 days, accompanied by an average humidity of 69%, which adds a touch of tropical warmth to the air.

August Temperature in Big Timber

In August in Big Timber, the average temperature is 18°C (65°F). Maximums can reach 34°C (94°F) and minimums can be as low as 3°C (38°F). This diverse temperature range makes Big Timber an ideal destination for travelers looking to experience both warm and cool weather activities.

August Weather in Big Timber: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Big Timber, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Big Timber, August typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec221831374859676555403124
Data source: Temperature data for Big Timber generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Big Timber

In Big Timber in August, the precipitation amount is 39 mm (1.5 in) over the course of 7 days.

August Precipitation Trends in Big Timber

The chart displays monthly precipitation patterns in Big Timber, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Big Timber, August typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2460497811281353959604137
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Big Timber

In Big Timber in August humidity is 69%. With an average temperature of 18°C (65°F), this humidity feels like a warm, damp blanket around you, making travel less comfortable and causing you to feel sticky and fatigued more quickly.

August Average Humidity in Big Timber

This chart illustrates the average monthly humidity levels in Big Timber, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Big Timber is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Big Timber

In Big Timber in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Big Timber.

Maximum UV Index Levels in Big Timber for August

The chart shows the monthly maximum UV Index (UVI) for Big Timber in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Big Timber typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108632
Data source: Big Timber August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Big Timber Compares to Other Months

Weather in Big Timber varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Big Timber, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Big Timber, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)24 mm (0.9 inches)93%moderate
February Weather-8°C (18°F)60 mm (2.4 inches)92%moderate
March Weather-1°C (31°F)49 mm (1.9 inches)89%high
April Weather3°C (37°F)78 mm (3.1 inches)83%very high
May Weather9°C (48°F)112 mm (4.4 inches)79%very high
June Weather15°C (59°F)81 mm (3.2 inches)76%extreme
July Weather19°C (67°F)35 mm (1.4 inches)74%very high
August Weather18°C (65°F)39 mm (1.5 inches)69%very high
September Weather13°C (56°F)59 mm (2.3 inches)67%very high
October Weather4°C (40°F)60 mm (2.4 inches)72%high
November Weather-1°C (31°F)41 mm (1.6 inches)89%moderate
December Weather-5°C (24°F)37 mm (1.5 inches)94%low

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