Climate averages 1991–2020

Cypress weather
in December.

A mild, wet month: the 11th warmest and the 11th driest of the year.

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

Average high 17.2°C Daytime mean, December

Average low 8.3°C Night-time mean, December

Rainfall 102 mm 10 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

December is a mild month in Cypress: daytime highs average 17.2°C and nights cool to about 8.3°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 102 mm of rain on roughly 10 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 15 min on an average December day.

The nearest other city in this atlas is The Woodlands (29 km away). In December its highs average 17.0°C, about as warm as Cypress, with 106 mm of rain.

Among the 498 cities listed in the United States, Cypress ranks joint 98th of 498 for the warmest December highs and joint 389th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Cypress is 6.7°C warmer than that mean.

From December to January, average highs fall by 0.8°C to 16.4°C, and monthly rainfall falls from 102 mm to 95 mm.

The annual picture

December in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Cypress climate table

1991–2020

Monthly climate averages for Cypress, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	16.4°C7.2°C	7.2°C	95	9.7	10.410 h
February	18.4°C9.1°C	9.1°C	79	8.8	11.111 h
March	21.8°C12.2°C	12.2°C	85	9.3	12.012 h
April	25.5°C15.7°C	15.7°C	96	8.6	12.913 h
May	29.4°C20.1°C	20.1°C	99	9.9	13.614 h
June	32.1°C23.3°C	23.3°C	110	11.9	14.014 h
July	33.3°C24.3°C	24.3°C	74	10.5	13.914 h
August	33.9°C24.5°C	24.5°C	83	11.1	13.213 h
September	31.1°C22.0°C	22.0°C	97	10.3	12.412 h
October	26.8°C17.2°C	17.2°C	99	8.7	11.511 h
November	21.1°C11.9°C	11.9°C	96	8.5	10.711 h
December, selected	17.2°C8.3°C	8.3°C	102	9.8	10.310 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 Cypress

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 Cypress) is explained once on the Cypress year overview and on the Sources, method and limits page.