Park climate1991–2020 climate normals757 m source elevationNASA POWER

Twelve-month representative-point averages for temperature, precipitation, wind, and daylight duration

Lake Roosevelt National Recreation Area Monthly Climate Normals and Atmospheric Data Profiles

Name: Lake Roosevelt National Recreation Area monthly climate normals
Creator: NASA POWER

Analyze the long-term climatic patterns at Lake Roosevelt National Recreation Area through monthly averages recorded between 1991 and 2020. This data details representative shifts in temperature, daily precipitation rates, relative humidity, wind speed, and daylight duration at a fixed reference point. These measurements provide a foundational understanding of the local atmospheric rhythm, distinct from current weather or seasonal forecasts.

View park overview Browse climate zones

A flat style digital illustration of a lake landscape with rocky bluffs, evergreen forest, and a floating boat dock in the foreground.

Annual climate pattern

Long term monthly temperature averages alongside average daily precipitation rates for Washington

Lake Roosevelt National Recreation Area Annual Climate Normals and Monthly Temperature Patterns

Average monthly minimum, mean, and maximum temperatures track a distinct annual thermal cycle across the calendar at Lake Roosevelt National Recreation Area. Average daily precipitation rates accompany these temperature normals according to NASA power records compiled from one representative coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 7.6 °C
Warmest month: July
Coolest month: January
Wettest month: December

Twelve-month climate

Track long-term monthly temperature bounds, average daily precipitation rates, wind speeds, and calculated daylight across the calendar year.

Lake Roosevelt National Recreation Area Twelve Month Climate Comparison and Weather by Month Records

Comparing average minimum, mean, and maximum temperatures alongside average daily precipitation rates reveals how regional conditions shift across the calendar year. Examining relative humidity, wind speed, and calculated daylight hours provides a complete multi-variable climatological profile derived from a representative park coordinate.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	-4.8 °C-20.1° to 4°	2.1 mm/day	95%	2.2 m/s	8.7 hours
February	-2.3 °C-15.1° to 7.7°	1.6 mm/day	87.7%	2.4 m/s	10 hours
March	2.1 °C-9.3° to 15.4°	1.7 mm/day	78.7%	2.5 m/s	11.6 hours
April	6.7 °C-4° to 21.3°	1.3 mm/day	68.7%	2.4 m/s	13.4 hours
May	12.5 °C-0.6° to 27.6°	1.4 mm/day	62.6%	2.2 m/s	15 hours
June	16.3 °C4° to 31.5°	1.3 mm/day	58.5%	2.2 m/s	15.8 hours
July	21.5 °C7.8° to 35.7°	0.6 mm/day	47.6%	2.2 m/s	15.4 hours
August	20.9 °C7.9° to 35.6°	0.4 mm/day	45.2%	2.2 m/s	14.1 hours
September	15.5 °C2.3° to 31.2°	0.6 mm/day	51.4%	2.2 m/s	12.3 hours
October	7.5 °C-4.1° to 22.6°	1.3 mm/day	66.8%	2.2 m/s	10.5 hours
November	0.4 °C-10.6° to 11.6°	2.2 mm/day	85.1%	2.2 m/s	9 hours
December	-4.5 °C-16.9° to 4.6°	2.3 mm/day	92.2%	2.2 m/s	8.2 hours

Compare two months

See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.

First month

Second month

Mean temperature: January: -4.8 °C; July: 21.5 °C; Change from January to July: +26.2 °C
Precipitation: January: 2.1 mm/day; July: 0.6 mm/day; Change from January to July: -1.5 mm/day
Daylight: January: 8.7 hours; July: 15.4 hours; Change from January to July: +6.8 hours

Calculated climate highlights

Comparing long-term monthly averages for temperature, precipitation, humidity, wind, and daylight duration.

Calculated Monthly Climate Contrasts and Extremes at Lake Roosevelt National Recreation Area

Calculated monthly normals identify the warmest, coolest, wettest, and driest periods derived from stored coordinate records without representing observed weather extremes. Multiple measured variables provide a balanced annual baseline across twelve distinct climatological intervals.

Warmest month: July21.5 °C
Coolest month: January-4.8 °C
Wettest month: December2.3 mm/day
Driest month: August0.4 mm/day
Most humid month: January95%
Windiest month: March2.5 m/s
Longest daylight: June15.8 hours

Interactive climate map

National park climate map

Open the climate map to compare monthly temperature, precipitation, and other averages.

Global National Park Climate Map

Other park climates

Examine monthly temperature, precipitation, and daylight shifts across diverse regional settings

Compare Lake Roosevelt National Recreation Area Climate Profiles with Other Protected Landscapes

Browse standardized monthly climate records to analyze how long-term temperature patterns and precipitation rhythms vary among protected areas. Examining multiple geographic settings helps reveal broad atmospheric contrasts without assuming equivalent environmental conditions.