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Park climate1991–2020 climate normals149 m source elevationNASA POWER

Review long-term averages for temperature, precipitation, wind speed, and daylight duration at a representative coordinate.

Rolley Lake Provincial Park Monthly Climate Normals: Twelve-Month Atmospheric Analysis (1991 to 2020)

Annual patterns for Rolley Lake Provincial Park emerge through twelve-month climate averages derived from NASA POWER data. These measurements encompass monthly mean temperatures, daily precipitation rates, relative humidity, wind speed, and average daylight hours collected between 1991 and 2020. Representing a single observation point at an elevation of 148.97 meters, this data provides a consistent historical baseline for comparing atmospheric conditions across the calendar year.

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An artistic, stylized illustration of a canyon with two waterfalls cascading into a river, surrounded by evergreen trees under a pale sun.
Annual climate pattern

Comparing twelve-month average temperatures and daily precipitation rates for long-term park climatology

Rolley Lake Provincial Park Annual Climate Normals and Monthly Temperature Patterns

Average monthly temperatures span from winter lows to peak summer warmth across the coordinate sample at Rolley Lake Provincial Park. Average daily precipitation rates shift through the calendar year alongside these thermal records based on NASA Power climatology data from 1991 to 2020.
Mean temperatureAverage minimum–maximum rangePrecipitation
Temperature (°C)PrecipitationUp to 7.3 mm/day-10°0°10°20°30°40°2°3°6°8°12°15°18°18°15°10°5°2°0123456786.54.24.63.22.421.21.22.34.77.36JanFebMarAprMayJunJulAugSepOctNovDec
Annual mean
9.5 °C
Warmest month
August
Coolest month
December
Wettest month
November
Twelve-month climate

Compare average temperature bounds, precipitation rates, wind, humidity, and calculated daylight across the calendar year.

Rolley Lake Provincial Park Weather by Month: Complete Twelve-Month Climate Records

Examine average minimum, mean, and maximum temperatures alongside average daily precipitation rates for every month of the year at Rolley Lake Provincial Park. Reviewing these twelve distinct climatological normals clarifies how temperature, humidity, wind speed, and daylight hours shift across seasons.
Mean temperaturePrecipitationHumidityWind speedDaylight
January2.2 °C-9.3° to 10.6°6.5 mm/day91.2%2.5 m/s8.5 hours
February3.2 °C-6.3° to 11.7°4.2 mm/day86.8%2.4 m/s9.9 hours
March5.5 °C-3.1° to 15.6°4.6 mm/day84.5%2.2 m/s11.6 hours
April8.5 °C-0.2° to 21.1°3.2 mm/day80.5%1.9 m/s13.5 hours
May12.4 °C3.3° to 26.2°2.4 mm/day78.4%1.7 m/s15.1 hours
June14.8 °C6.8° to 28.2°2 mm/day79%1.6 m/s16 hours
July17.7 °C9.5° to 31.7°1.2 mm/day77.3%1.5 m/s15.6 hours
August17.8 °C9.7° to 31°1.2 mm/day77.4%1.4 m/s14.1 hours
September15 °C6.2° to 28.6°2.3 mm/day78.7%1.5 m/s12.3 hours
October9.9 °C0.7° to 22.1°4.7 mm/day84.2%2 m/s10.4 hours
November5.2 °C-4.6° to 14.2°7.3 mm/day89.6%2.4 m/s8.8 hours
December1.9 °C-8.4° to 10.3°6 mm/day90.8%2.6 m/s8.1 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.

Mean temperature
December: 1.9 °C
August: 17.8 °C
Change from December to August: +15.9 °C
Precipitation
December: 6 mm/day
August: 1.2 mm/day
Change from December to August: -4.8 mm/day
Daylight
December: 8.1 hours
August: 14.1 hours
Change from December to August: +6.1 hours
Calculated climate highlights

Warmest, coolest, wettest, and windiest periods derived from twelve long term records

Calculated Monthly Climate Contrasts and Normals at Rolley Lake Provincial Park

Comparative monthly averages summarize temperature, precipitation, wind, and daylight variations across the sampled coordinate. These calculated high and low points reflect baseline climate normals rather than observed weather extremes or historical records.
Warmest month
August17.8 °C
Coolest month
December1.9 °C
Wettest month
November7.3 mm/day
Driest month
July1.2 mm/day
Most humid month
January91.2%
Windiest month
December2.6 m/s
Longest daylight
June16 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

Explore monthly temperature normals and atmospheric patterns across diverse protected landscapes

Comparing Rolley Lake Provincial Park Climate Profiles with Other Protected Areas

Examine long-term monthly temperature, precipitation, humidity, wind, and daylight records across various regional park profiles. Contrasting these seasonal metrics reveals distinct geographic and atmospheric variations among protected natural areas.
MoriAtlas Explorer

Explore the Mapped Geography and Protected Trails of Rolley Lake Provincial Park

Continue examining the regional context and natural terrain of Rolley Lake Provincial Park through the MoriAtlas collection. Analyze the relationship between its central lake, forested slopes, and local waterfall features to better understand the protected geography of the Fraser Valley Regional District.

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