Metar & Taf

Visual decoder

Weather in Harris County

Calculated from weather data of George Bush Intercontinental/Houston Airport (KIAH) between 2020 and 2024.

Maximum temperatures (°F)

Month Average 2024 2023 2022 2021 2020
January 65.0 62.0 68.0 65.0 65.0 67.0
February 69.0 72.0 70.0 64.0 62.0 69.0
March 76.0 76.0 74.0 76.0 79.0
April 79.0 77.0 82.0 78.0 81.0
May 87.0 85.0 89.0 84.0 87.0
June 92.0 94.0 96.0 91.0 91.0
July 95.0 97.0 97.0 92.0 94.0
August 95.0 102.0 93.0 94.0 96.0
September 90.0 96.0 91.0 89.0 89.0
October 82.0 82.0 82.0 84.0 82.0
November 72.0 70.0 70.0 73.0 78.0
December 68.0 67.0 71.0 76.0 67.0
Average 79.0 67.0 82.0 82.0 80.0 82.0

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 46.0 42 50 43 47 50
February 51.0 53 52 42 44 49
March 57.0 58 51 55 64
April 61.0 60 64 60 62
May 70.0 68 72 69 69
June 75.0 74 77 76 74
July 77.0 78 78 76 78
August 77.0 80 76 77 75
September 73.0 75 71 70 73
October 63.0 64 60 66 61
November 54.0 53 53 52 57
December 50.0 49 56 60 46
Average 61.0 48.0 64.0 62.0 63.0 63.0

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 0 143 148 130 153
77 °F or warmer 8 231 234 240 238
68 °F or warmer 28 304 287 310 315
32 °F or colder 4 0 4 5 2

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 9.0 15 10 7 6 11
February 8.5 3 8 9 14 7
March 7.0 6 9 8 8
April 5.5 6 5 8 6
May 4.2 4 2 11 3
June 3.7 1 1 5 4
July 3.2 1 3 6 5
August 3.9 1 7 2 1
September 5.5 1 1 7 8
October 5.8 10 4 3 6
November 7.6 11 17 3 4
December 6.7 3 8 2 8
Average 6.1 8.6 4.9 5.7 6.2 5.7

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 9.8 11 10 10 10 10
February 10.1 10 10 10 10 10
March 10.8 11 11 11 11
April 11.3 11 13 11 10
May 10.2 8 11 11 10
June 8.4 7 8 8 9
July 7.1 7 8 6 8
August 7.6 8 8 8 7
September 7.9 8 7 7 9
October 8.9 10 8 8 8
November 8.5 9 9 8 8
December 8.6 8 8 9 9
Average 9.3 10.4 8.9 9.3 8.9 9.1

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 N N N NW E
February SW S N NE NE
March SE S E SE
April E SE E E
May SE SE SE SE
June S SE SE SE
July S S SE SE
August S SE SE SE
September SE E E NE
October E E SE NE
November NE E E E
December E SE S SE

Prevailing wind direction

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

Harris County weather Q&A

What is the warmest month in Harris County?

The warmest month is August with an average temperature of 95 °F over the past years.

What is the coldest month in Harris County?

The coldest month is January with an average daytime temperature of 65 °F in the past few years.

Which month is the wettest in Harris County?

Chance of precipitation is the highest in January with a probability of around 9.0 %.

Which month is the driest in Harris County?

The least rainfall and snow can be expected in July. The probability is about 3.2 %.