Lincoln County Climate
Lincoln County, Idaho
Avg Annual Temp
49.4°F
Annual Precip
10.5"
Annual Snowfall
28.6"
Extreme Heat Days
45.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lincoln County Weather
Arid warmth on the Snake River Plain
Lincoln County is relatively warm for Idaho, with an annual average of 49.4°F. It is very dry, with only 10.5 inches of annual precipitation, typical of a high-desert environment.
Warmest among the local counties
The county's average temperature of 49.4°F is nearly 3 degrees higher than the Idaho state average of 46.5°F. It is also one of the driest counties, receiving 6.5 inches less rain than the state average.
Comparable to nearby Jerome County
Lincoln County closely mirrors Jerome County’s 49.6°F average and 10.4-inch precipitation level. Both counties face much higher summer heat risks than their neighbors in the northern part of the state.
Scorching summers and dry winters
Summer is the dominant season here, with a July average of 74.5°F and a significant 45 days over 90°F. Winters are dry with 28.6 inches of snow and a January average of 26.5°F.
Focus on high-capacity cooling
With 45 days of extreme heat, high-efficiency HVAC systems are the most important investment for homeowners. Drought-tolerant landscaping is also essential given the sparse 10.5 inches of annual rainfall.
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.