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City briefing

Adelphi

Maryland, United States · 17,000 people
Jan
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Mar
Apr
May
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The year’s records
Annual mean 14°C · wettest around December · prevailing wind W
Warmest
30.6 °C
Coldest
4.3 °C
Wettest
72%
Windiest
4.2 m/s
Prevailing
W
3.2 m/s average

When this place is good five ratings · thirty-six ten-day sections · click a cell to read it

Jan
Feb
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May
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Dec

Every reading

bars actual · line feels-like, °C
-5051015202530JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember-5051015202530JFMAMJJASOND

The average temperature in Adelphi over the whole year is 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C.

Month by month Adelphi climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January5°C-0°C-0°C56%46%2.5 m/s3014
February7°C2°C3°C63%43%2.4 m/s5027
March11°C5°C7°C60%41%2.9 m/s16045
April17°C10°C13°C57%43%2.7 m/s39763
May21°C15°C20°C61%49%2.1 m/s592259
June27°C20°C27°C54%37%2.1 m/s505125
July30°C23°C32°C56%35%1.7 m/s16544
August28°C21°C30°C62%38%1.7 m/s33599
September25°C18°C25°C59%41%1.7 m/s634236
October19°C12°C17°C52%40%1.8 m/s571467
November12°C5°C8°C60%34%2.1 m/s18152
December7°C2°C3°C64%46%2.1 m/s2026

High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.

Seasons, and the year in short Adelphi weather by season

Year round, Adelphi has days of about 5°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from -0°C to 23°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around December and least likely around October. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.

Adelphi weather in winterDecember to February

High 6°CLow 1°CRain 61%

Winter in Adelphi has typical daily highs of about 6°C and lows of about 1°C, with a 61% chance of rain on a given day.

Adelphi weather in springMarch to May

High 16°CLow 10°CRain 59%

Spring in Adelphi has typical daily highs of about 16°C and lows of about 10°C, with a 59% chance of rain on a given day.

Adelphi weather in summerJune to August

High 28°CLow 21°CRain 57%

Summer in Adelphi has typical daily highs of about 28°C and lows of about 21°C, with a 57% chance of rain on a given day.

Adelphi weather in autumnSeptember to November

High 19°CLow 12°CRain 57%

Autumn in Adelphi has typical daily highs of about 19°C and lows of about 12°C, with a 57% chance of rain on a given day.

When is the rainy season in Adelphi?

Adelphi has no sharply defined rainy season: the chance of rain on a given day runs from 52% in October, the driest month, to 64% in December, the wettest.

What time of year is Adelphi windiest?

Winds in Adelphi are highest in March, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the W.

What is the average temperature in Adelphi year round?

The average temperature in Adelphi over the whole year is 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C.

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