Climate averages 1991–2020

Boca Raton weather
in December.

A warm, moderately wet month: the 11th warmest and the driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 24.0°C Daytime mean, December
Average low 18.0°C Night-time mean, December
Rainfall 43 mm 8 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Boca Raton · average highYear overview

December is a warm month in Boca Raton: daytime highs average 24.0°C and nights cool to about 18.0°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 43 mm of rain on roughly 8 days, which makes December a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 31 min on an average December day.

The nearest other city in this atlas is Deerfield Beach (5 km away). In December its highs average 24.2°C, about as warm as Boca Raton, with 43 mm of rain.

Among the 498 cities listed in the United States, Boca Raton ranks joint 14th of 498 for the warmest December highs and joint 94th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Boca Raton is 13.4°C warmer than that mean.

From December to January, average highs fall by 1.0°C to 23.0°C, and monthly rainfall rises from 43 mm to 51 mm.

The annual picture

December in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Boca Raton climate table

1991–2020
Monthly climate averages for Boca Raton, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 23.0°C16.3°C16.3°C517.410.711 h
February 24.1°C17.0°C17.0°C456.911.211 h
March 25.3°C18.1°C18.1°C588.112.012 h
April 27.0°C20.1°C20.1°C678.712.813 h
May 28.7°C22.2°C22.2°C9911.613.413 h
June 29.9°C24.2°C24.2°C15420.013.814 h
July 30.6°C24.9°C24.9°C11319.513.614 h
August 30.6°C25.1°C25.1°C14221.113.113 h
September 29.6°C24.6°C24.6°C15821.312.312 h
October 27.9°C23.0°C23.0°C11514.611.612 h
November 25.6°C20.2°C20.2°C558.910.911 h
December, selected 24.0°C18.0°C18.0°C437.810.511 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

December in nearby cities

Distance from Boca Raton

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Boca Raton) is explained once on the Boca Raton year overview and on the Sources, method and limits page.

Pompano Beach and Deerfield Beach lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.