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October Weather in Richland, United States

Last updated: June 24, 2025

In October, the average temperature in Richland, United States is a pleasant 11°C (53°F). However, temperatures can fluctuate dramatically, with a minimum of -1°C (30°F) and a maximum of 26°C (79°F). This month also brings significant rainfall, with an average precipitation of 190 mm (7.5 in) over 15 days, contributing to an average humidity of 84%. Embrace the diverse weather as you explore the charm of Richland!

October Temperature in Richland

In October, in Richland, the average temperature is 11°C (53°F). Maximums can reach 26°C (79°F), while minimums can drop to as low as -1°C (30°F). This variation in temperature means you should pack layers to accommodate both warm days and chilly nights while exploring.

October Weather in Richland: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Richland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richland, October typically has an average temperature of 11°C (53°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec232632445766717063523829
Data source: Temperature data for Richland 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.

October Precipitation in Richland

In Richland in October, the total precipitation amount is 190 mm (7.5 in) spread over 15 days.

October Precipitation Trends in Richland

The chart displays monthly precipitation patterns in Richland, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Richland, October typically receives around 190 mm (7.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec11612010614113411218412398190139142
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Richland

In Richland in October, humidity is 84%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and requiring extra layers to stay warm while traveling.

October Average Humidity in Richland

This chart illustrates the average monthly humidity levels in Richland, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Richland is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Richland

In Richland in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Richland.

Maximum UV Index Levels in Richland for October

The chart shows the monthly maximum UV Index (UVI) for Richland in October, 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 October, the maximum UV index in Richland typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997532
Data source: Richland October 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 October Weather in Richland Compares to Other Months

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

This table compares monthly weather conditions in Richland, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)116 mm (4.6 inches)90%moderate
February Weather-3°C (26°F)119 mm (4.7 inches)90%moderate
March Weather0°C (33°F)106 mm (4.2 inches)87%high
April Weather7°C (45°F)141 mm (5.6 inches)88%very high
May Weather14°C (57°F)134 mm (5.3 inches)82%very high
June Weather19°C (66°F)112 mm (4.4 inches)79%very high
July Weather22°C (72°F)184 mm (7.2 inches)78%very high
August Weather21°C (70°F)123 mm (4.8 inches)76%very high
September Weather17°C (63°F)98 mm (3.9 inches)78%high
October Weather11°C (53°F)190 mm (7.5 inches)84%moderate
November Weather3°C (38°F)139 mm (5.5 inches)89%moderate
December Weather-1°C (30°F)142 mm (5.6 inches)86%low

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