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Compare the Climate and Weather in Ancient Oaks and Washington, D.C.

This page lets you compare and contrast the weather and climate in Ancient Oaks and Washington, D.C. year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

You can compare up to 6 locations. Add more locations using the search box below or by clicking the map.

Ancient Oaks
Pennsylvania, United States
Washington, D.C.
Washington, D.C.; United States
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Average High and Low Temperature

Compare the Average High and Low Temperature in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F67248738722943169334NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
High Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 39°F42°F52°F64°F74°F82°F86°F84°F76°F64°F53°F43°F
Washington, D.C. 44°F47°F56°F67°F75°F84°F88°F86°F79°F68°F57°F48°F
Low Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 25°F26°F34°F44°F53°F63°F67°F65°F56°F45°F37°F29°F
Washington, D.C. 30°F32°F39°F48°F58°F67°F71°F70°F63°F51°F42°F34°F

Ancient Oaks

Average Hourly Temperature in Ancient OaksJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoldcoolcoolwarmfreezinghotfreezing

Washington, D.C.

Average Hourly Temperature in Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotwarmfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%64446548NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer Skies Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 44%45%48%49%49%53%59%62%63%61%52%46%
Washington, D.C. 49%49%51%52%52%54%59%63%64%63%56%50%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%402020NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 6.7d6.4d8.2d8.8d10.7d11.5d11.4d10.0d8.2d7.8d7.2d7.6d
Washington, D.C. 6.9d6.8d8.2d8.8d10.5d11.2d11.6d10.2d7.7d6.9d6.8d7.1d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in4.01.93.5NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
Rainfall Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 2.0″1.9″2.7″3.5″3.6″3.8″3.8″3.5″3.9″3.6″3.3″2.8″
Washington, D.C. 2.1″2.1″3.0″3.3″3.5″3.4″3.1″3.1″3.3″3.3″3.1″2.8″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 in7.25.8NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
Snowfall Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 6.5″6.8″3.2″0.2″0.0″0.0″0.0″0.0″0.0″0.1″0.8″4.5″
Washington, D.C. 5.0″5.4″1.5″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.4″2.5″

Hours of Daylight

Compare the Hours of Daylight in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.19.3NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The number of hours during which the Sun is at least partly above the horizon.
Daylight Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 9.7h10.7h12.0h13.4h14.5h15.0h14.7h13.7h12.4h11.1h9.9h9.3h
Washington, D.C. 9.8h10.8h12.0h13.3h14.3h14.9h14.6h13.6h12.4h11.1h10.0h9.5h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%67NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 0.0d0.0d0.0d0.2d2.9d10.4d19.2d16.0d5.8d1.1d0.1d0.0d
Washington, D.C. 0.0d0.0d0.0d0.2d4.1d12.8d19.8d17.9d9.0d1.9d0.1d0.0d

Average Wind Speed

Compare the Average Wind Speed in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mph6.93.79.85.9NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 6.36.76.65.84.74.13.83.84.24.75.35.7
Washington, D.C. 9.39.69.68.97.66.66.16.17.07.98.58.7

Average Water Temperature

Compare the Average Water Temperature in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FNaN7736NowNowWashington, D.C.Washington, D.C.
The daily average wide-area surface water temperature.
Water Temp. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Washington, D.C. 38°F36°F40°F47°F56°F67°F75°F77°F73°F64°F54°F45°F

Tourism Score

Compare the Tourism Score in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec002244668810106.50.1NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec002244668810105.66.3NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°FNowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Ancient Oaks and Washington, D.C.JanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.91.72.0NowNowWashington, D.C.Washington, D.C.Ancient OaksAncient Oaks
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ancient Oaks 2.12.94.15.36.26.86.76.05.03.62.41.8
Washington, D.C. 2.33.24.35.56.46.86.76.15.13.82.72.1

This report illustrates the typical weather for Ancient Oaks and Washington, D.C. year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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