Climateby Month

Conroe, TX climate by month

NOAA 1991-2020 normals · 217 ft elevation

Summers in Conroe are hot and oppressively humid; winters are cool. Highs peak at 96°F in August and fall to 63°F in January. Wet days are spread through the year, from about 6 to 9 a month. Snow is rare. The most comfortable time to visit is March and April.

Warmest month
96°F
August normal high
Coldest month
42°F
January normal low
Wet days a year
84
51.0 in of precipitation
Muggy days a year
173
dew point 65°F or higher

How warm is Conroe?

Normal highs range from 63°F in January to 96°F in August.

40°60°80°100° January: normal high 63°F (17°C), low 42°F (6°C) 63° 42° February: normal high 67°F (19°C), low 46°F (8°C) March: normal high 74°F (23°C), low 52°F (11°C) April: normal high 80°F (27°C), low 59°F (15°C) May: normal high 87°F (31°C), low 67°F (19°C) June: normal high 92°F (33°C), low 73°F (23°C) July: normal high 95°F (35°C), low 74°F (23°C) August: normal high 96°F (36°C), low 74°F (23°C) 96° 74° September: normal high 90°F (32°C), low 70°F (21°C) October: normal high 82°F (28°C), low 60°F (16°C) November: normal high 72°F (22°C), low 51°F (11°C) December: normal high 64°F (18°C), low 44°F (7°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Conroe?

December has the most wet days (about 9); the year brings about 51 in of precipitation.

January: 8 wet days February: 8 wet days March: 7 wet days April: 6 wet days 6 May: 6 wet days June: 7 wet days July: 7 wet days August: 7 wet days September: 7 wet days October: 6 wet days November: 7 wet days December: 9 wet days 9 JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Conroe?

Muggy days peak in July, at about 31 days.

January: 1 muggy days 1 February: 2 muggy days March: 4 muggy days April: 10 muggy days May: 22 muggy days June: 29 muggy days July: 31 muggy days 31 August: 30 muggy days September: 24 muggy days October: 13 muggy days November: 5 muggy days December: 2 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at G Bush Intercontinental Airport/Houston Airport, 23 mi SSE of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 10.2 hours in December to 14.1 hours in June.

January: 10.4 hours of daylight February: 11.1 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.7 hours of daylight June: 14.1 hours of daylight 14.1 July: 13.9 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.4 hours of daylight November: 10.6 hours of daylight December: 10.2 hours of daylight 10.2 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Conroe, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 63°F42°F 4.4 in8 0.0 in 1 10.4 h
February 67°F46°F 3.3 in8 0.0 in 2 11.1 h
March 74°F52°F 3.5 in7 0.0 in 4 12.0 h
April 80°F59°F 3.4 in6 0.0 in 10 12.9 h
May 87°F67°F 5.5 in6 0.0 in 22 13.7 h
June 92°F73°F 5.2 in7 0.0 in 29 14.1 h
July 95°F74°F 3.3 in7 0.0 in 31 13.9 h
August 96°F74°F 4.5 in7 0.0 in 30 13.2 h
September 90°F70°F 3.7 in7 0.0 in 24 12.3 h
October 82°F60°F 5.4 in6 0.0 in 13 11.4 h
November 72°F51°F 4.8 in7 0.0 in 5 10.6 h
December 64°F44°F 4.1 in9 0.1 in 2 10.2 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Conroe

By our comfort score, the best months are March and April.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 561061
Feb 611151
Mar 661450
Apr 63951
May 51258
Jun 380621
Jul 360527
Aug 340527
Sep 391518
Oct 53754
Nov 611250
Dec 55960

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Conroe

The last spring frost typically comes around Feb 24, and the first fall frost around Dec 2, leaving 285 frost-free days in a typical year.

Frost and freeze dates for Conroe
Typical date1 year in 10
Last spring frost (32°F)Feb 24after Mar 17
First fall frost (32°F)Dec 2before Nov 11
Last hard freeze (28°F)Feb 2after Mar 6
First hard freeze (28°F)Dec 23before Nov 24
Frost-free season285 daysunder 253 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Conroe (USC00411956), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Texas.

Hottest and coldest readings, 1991-2020

The highest reading was 109°F (September 4, 2000); the lowest was 15°F (February 3, 1996).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Conroe

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain and frost dates: Conroe (USC00411956), 2.0 mi NW of the city center, 245 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall, snow depth, humidity and wind by hour and cloud cover: Houston Intercont Airport (USW00012960), 24 mi SSE of the city center, 95 ft (122 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: G Bush Intercontinental Airport/Houston Airport (722430-12960), 23 mi SSE of the city center, 90 ft (127 ft lower than the city). Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error