Weather in Washington County

Calculated from weather data of Brenham Municipal Airport (K11R) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	64.0	61.0	67.0	64.0	64.0	67.0
February	67.0	72.0	70.0	63.0	60.0	66.0
March	75.0	75.0	76.0	74.0	75.0	78.0
April	80.0	81.0		83.0	78.0	80.0
May	87.0		87.0	92.0	83.0	86.0
June	93.0		95.0	97.0	91.0	91.0
July	96.0		98.0	101.0	91.0	95.0
August	97.0		102.0	97.0	94.0	96.0
September	91.0		97.0	93.0	91.0	86.0
October	83.0		83.0	84.0	84.0	82.0
November	72.0		70.0	70.0	73.0	77.0
December	68.0		68.0	69.0	76.0	67.0
Average	80.0	72.0	83.0	83.0	80.0	81.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	44.0	41	48	41	45	49
February	48.0	52	50	40	41	46
March	55.0	57	57	48	53	60
April	60.0	64		63	59	60
May	67.0		69	71	66	64
June	74.0		76	74	75	71
July	73.0		51	77	75	78
August	72.0		59	73	76	74
September	70.0		75	70	69	70
October	58.0		62	59	61	60
November	51.0		52	50	49	54
December	48.0		47	55	57	43
Average	59.0	53.0	58.0	60.0	61.0	61.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
86 °F or warmer	3	145	173	134	147
77 °F or warmer	45	199	238	240	244
68 °F or warmer	87	251	290	311	304
32 °F or colder	6	3	17	9	4

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	6.1	8	7	5	5	8
February	6.3	2	5	6	5	7
March	4.3	3	3	5	5	6
April	2.5	1		1	6	5
May	1.9		2	0	5	1
June	2.9		1	1	4	4
July	1.8		1	1	6	2
August	2.4		0	2	1	1
September	3.1		1	1	2	8
October	3.8		5	2	4	3
November	6.1		5	11	4	5
December	5.5		2	6	2	6
Average	3.7	3.2	2.7	3.1	4.1	4.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	8.2	9	8	8	8	8
February	8.7	9	9	9	8	9
March	8.4	7	9	10	9	8
April	8.9	9		10	8	8
May	8.1		4	9	8	8
June	6.8		7	7	6	7
July	6.0		5	7	5	7
August	6.1		6	6	5	6
September	5.4		5	4	5	7
October	6.7		8	5	6	6
November	6.5		6	6	6	6
December	7.4		7	7	8	7
Average	7.4	8.4	6.8	7.3	6.9	7.1

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	NW	NW	NW	NW	SE
February	W	W	NW	NW	NW
March	SE	S	SW	SE	S
April	S		S	SE	SE
May		E	S	SE	S
June		S	S	SE	SE
July		S	S	S	S
August		S	S	S	S
September		SE	E	E	N
October		E	S	SW	N
November		N	NE	W	E
December		NW	S	S	W

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Washington County weather Q&A

What is the warmest month in Washington County?

The warmest month is August with an average temperature of 97 °F over the past years.

What is the coldest month in Washington County?

The coldest month is January with an average daytime temperature of 64 °F in the past few years.

Which month is the wettest in Washington County?

Chance of precipitation is the highest in February with a probability of around 6.3 %.

Which month is the driest in Washington County?

The least rainfall and snow can be expected in July. The probability is about 1.9 %.