Oglala Lakota County Climate
Oglala Lakota County, South Dakota
Avg Annual Temp
48.0°F
Annual Precip
18.3"
Annual Snowfall
—
Extreme Heat Days
41.125
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oglala Lakota County Weather
A Semi-Arid and Dynamic Climate
Oglala Lakota County reports an annual average temperature of 48.0°F, which is closer to the national median than many of its neighbors. This region is characterized by high temperature variability and lower annual moisture.
One of South Dakota's Warmer Counties
Averaging 48.0°F, this county stays warmer than the South Dakota average of 45.6°F. However, it is much drier than the rest of the state, receiving only 18.3 inches of precipitation compared to the 22.7-inch average.
Drier and Hotter Than Eastern Neighbors
The county receives about 10 inches less precipitation than Moody or Minnehaha. It also experiences 41 extreme heat days, a massive jump from the single digits found in the eastern part of the state.
Extreme Heat and Mild Winters
While snowfall data remains unavailable for this specific area, the heat is the primary seasonal story with 41 days hitting 90°F or higher. July averages are a warm 74.0°F, and even January stays relatively mild at 24.6°F.
Prioritizing Summer Cooling and Hydration
With 41 days of extreme heat, a high-efficiency air conditioning system is vital for safety and comfort. Residents should also plan for dry conditions, as the 18.3 inches of annual rainfall requires water-conscious landscaping.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.