Skip to content
VSWeather

Great Falls, VA vs Reston, VA weather comparison

Great Falls

VA

Great Falls and Reston have remarkably similar climates.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Great Falls, VA and Reston, VA
Great FallsMetricReston
205 daysSunny daysclear or partly cloudy skies205 days
43 inPrecipitationper year43 in
119 daysWet daysrain or snow per year119 days
21 inSnowfallper year19 in
24 daysHot daysabove 90 °F23 days
105 daysFreezing nightsat or below 32 °F103 days
68%Humidityaverage relative68%
55 °FAverage temperatureyear round55 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

Great FallsReston

Daily highs

406080JanMarMayJulSepNovGreat Falls, Jan: 42 °FGreat Falls, Feb: 46 °FGreat Falls, Mar: 54 °FGreat Falls, Apr: 66 °FGreat Falls, May: 73 °FGreat Falls, Jun: 82 °FGreat Falls, Jul: 86 °FGreat Falls, Aug: 85 °FGreat Falls, Sep: 78 °FGreat Falls, Oct: 67 °FGreat Falls, Nov: 56 °FGreat Falls, Dec: 46 °FReston, Jan: 42 °FReston, Feb: 46 °FReston, Mar: 54 °FReston, Apr: 66 °FReston, May: 73 °FReston, Jun: 82 °FReston, Jul: 86 °FReston, Aug: 85 °FReston, Sep: 78 °FReston, Oct: 67 °FReston, Nov: 56 °FReston, Dec: 46 °F

Daily lows

4060JanMarMayJulSepNovGreat Falls, Jan: 24 °FGreat Falls, Feb: 26 °FGreat Falls, Mar: 33 °FGreat Falls, Apr: 42 °FGreat Falls, May: 53 °FGreat Falls, Jun: 62 °FGreat Falls, Jul: 67 °FGreat Falls, Aug: 65 °FGreat Falls, Sep: 58 °FGreat Falls, Oct: 45 °FGreat Falls, Nov: 35 °FGreat Falls, Dec: 29 °FReston, Jan: 24 °FReston, Feb: 26 °FReston, Mar: 33 °FReston, Apr: 42 °FReston, May: 53 °FReston, Jun: 62 °FReston, Jul: 67 °FReston, Aug: 65 °FReston, Sep: 58 °FReston, Oct: 45 °FReston, Nov: 35 °FReston, Dec: 29 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls high424654667382868578675646
Reston high424654667382868578675646
Great Falls low242633425362676558453529
Reston low242633425362676558453529

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Great FallsReston
0.02.04.0JanMarMayJulSepNovGreat Falls, Jan: 3.1 inGreat Falls, Feb: 2.9 inGreat Falls, Mar: 3.9 inGreat Falls, Apr: 3.4 inGreat Falls, May: 3.9 inGreat Falls, Jun: 3.6 inGreat Falls, Jul: 4.1 inGreat Falls, Aug: 3.6 inGreat Falls, Sep: 4.5 inGreat Falls, Oct: 3.5 inGreat Falls, Nov: 3.0 inGreat Falls, Dec: 3.5 inReston, Jan: 3.1 inReston, Feb: 2.9 inReston, Mar: 3.9 inReston, Apr: 3.4 inReston, May: 3.9 inReston, Jun: 3.6 inReston, Jul: 4.1 inReston, Aug: 3.6 inReston, Sep: 4.5 inReston, Oct: 3.5 inReston, Nov: 3.0 inReston, Dec: 3.5 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls3.12.93.93.43.93.64.13.64.53.53.03.5
Reston3.12.93.93.43.93.64.13.64.53.53.03.5

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Great FallsReston
01020JanMarMayJulSepNovGreat Falls, Jan: 16 daysGreat Falls, Feb: 15 daysGreat Falls, Mar: 16 daysGreat Falls, Apr: 16 daysGreat Falls, May: 16 daysGreat Falls, Jun: 17 daysGreat Falls, Jul: 19 daysGreat Falls, Aug: 19 daysGreat Falls, Sep: 18 daysGreat Falls, Oct: 20 daysGreat Falls, Nov: 18 daysGreat Falls, Dec: 16 daysReston, Jan: 16 daysReston, Feb: 15 daysReston, Mar: 16 daysReston, Apr: 16 daysReston, May: 16 daysReston, Jun: 17 daysReston, Jul: 19 daysReston, Aug: 19 daysReston, Sep: 18 daysReston, Oct: 20 daysReston, Nov: 18 daysReston, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Great Falls161516161617191918201816
Reston161516161617191918201816

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Great Falls vs another city

See the full Great Falls, VA climate profile

More Virginia cities

Reston vs another city

See the full Reston, VA climate profile

More Virginia cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).