Conroe, Texas climate: Normal weather by month, frost dates and records
Conroe's normal year runs from 39°F January nights to 95°F August afternoons, with 47.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.8°C, January lows of 4°C, August highs of 35°C, 1,210 mm of precipitation a year.
- NOAA stationConroe Montgomery County Airport
- Station IDUSW00053902
- Location30.36°N 95.41°W
- Elevation245 ft (75 m)
- Population114,581
On October 22, the normal high in Conroe is 80°F and the normal low 54°F, and the chance of measurable rain or snow is 38%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Conroe.
- Jan 62° 39°
- Feb 66° 43°
- Mar 73° 49°
- Apr 79° 55°
- May 86° 64°
- Jun 91° 70°
- Jul 94° 72°
- Aug 95° 72°
- Sep 90° 66°
- Oct 82° 56°
- Nov 71° 47°
- Dec 64° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Conroe each month?
August is the warmest month, with normal highs of 95°F; January the coldest, with normal lows of 39°F. The most precipitation falls in October (5.52 in), the least in February (2.94 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 62°F | 39°F | 50.8°F | 4.25 | 11 | <1 | 10 | 10 h 20 min |
| February | 66°F | 43°F | 54.5°F | 2.94 | 11 | <1 | 5 | 11 h 10 min |
| March | 73°F | 49°F | 61.0°F | 2.99 | 10 | <1 | 2 | 12 h |
| April | 79°F | 55°F | 67.0°F | 3.10 | 9 | 1 | <1 | 12 h 50 min |
| May | 86°F | 64°F | 74.8°F | 4.79 | 9 | 9 | <1 | 13 h 40 min |
| June | 91°F | 70°F | 80.6°F | 4.42 | 10 | 22 | <1 | 14 h 10 min |
| July | 94°F | 72°F | 82.9°F | 3.15 | 9 | 26 | <1 | 14 h |
| August | 95°F | 72°F | 83.1°F | 3.85 | 9 | 28 | <1 | 13 h 20 min |
| September | 90°F | 66°F | 78.0°F | 3.60 | 11 | 18 | <1 | 12 h 20 min |
| October | 82°F | 56°F | 68.9°F | 5.52 | 12 | 5 | <1 | 11 h 30 min |
| November | 71°F | 47°F | 58.7°F | 5.13 | 11 | <1 | 3 | 10 h 40 min |
| December | 64°F | 41°F | 52.3°F | 3.91 | 11 | <1 | 8 | 10 h 10 min |
| Year (annual) | 79°F | 56°F | 67.7°F | 47.65 | 123 | 108 | 27 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 4°C | 10.4°C | 108 mm |
| February | 19°C | 6°C | 12.5°C | 75 mm |
| March | 23°C | 9°C | 16.1°C | 76 mm |
| April | 26°C | 13°C | 19.4°C | 79 mm |
| May | 30°C | 18°C | 23.8°C | 122 mm |
| June | 33°C | 21°C | 27.0°C | 112 mm |
| July | 34°C | 22°C | 28.3°C | 80 mm |
| August | 35°C | 22°C | 28.4°C | 98 mm |
| September | 32°C | 19°C | 25.6°C | 91 mm |
| October | 28°C | 13°C | 20.5°C | 140 mm |
| November | 22°C | 8°C | 14.8°C | 130 mm |
| December | 18°C | 5°C | 11.3°C | 99 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Cleveland (20 miles away), gets 0 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053902; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Conroe?
Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, April has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053902.
When is the last frost in Conroe?
In Conroe, the last spring frost (32°F) comes after March 11 in half of years and after April 3 in one year in ten; the first autumn frost comes before November 19 in half of years and before November 1 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 111 year in 10 after April 3; 9 in 10 after February 14
- First autumn frost, half of years before
- November 191 year in 10 before November 1; 9 in 10 before December 9
NOAA puts the median frost-free season at 253 days, and the season without a hard freeze (28°F) at 291 days.
A hard freeze (28°F) comes after February 21 in half of springs and before December 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Conroe in zone 9a across its 4 ZIP code areas (9a in 77304, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Conroe's NOAA station is in zone 9a: the coldest night of a typical year reaches 22°F (24 complete years).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00053902; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Conroe ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Conroe's 4 ZIP code areas are all in zone 9a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Conroe?
In a normal year in Conroe, 108 days a year reach 90°F (8 of them 100°F or more), 27 nights fall to 32°F or colder and 123 days bring measurable precipitation.
- Days at 90°F or more
- 108a normal year
- Days at 100°F or more
- 8a normal year
- Nights at 32°F or colder
- 27a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 123a normal year
The highest temperature in this station's record (since 1997) is 110°F, on September 4, 2000; the lowest is 9°F, on February 16, 2021.
The wettest calendar year on that record is 2004, with 63.34 in; the snowiest season is 2024–25, with 1.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00053902; records: ACIS (NOAA Regional Climate Centers), station USW00053902. Records use complete months only; a month missing more than three days is left out.
How sunny is Conroe?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Conroe, 4.7 kWh per square metre a day. August is the sunniest month (84%) and February the cloudiest (65%). Among the 459 U.S. places of 50,000 or more, that ranks tied 243rd (with 32 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.9 |
| February | 65% | 3.3 |
| March | 71% | 4.4 |
| April | 75% | 5.4 |
| May | 77% | 5.9 |
| June | 81% | 6.3 |
| July | 83% | 6.3 |
| August | 84% | 6.0 |
| September | 81% | 5.1 |
| October | 81% | 4.3 |
| November | 76% | 3.2 |
| December | 69% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Conroe need?
A normal year in Conroe brings 1,704 heating degree days, 68% fewer than the median U.S. place (5,373), and 2,721 cooling degree days, 3.0 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,776 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 451 | 11 |
| February | 315 | 21 |
| March | 179 | 55 |
| April | 63 | 123 |
| May | 5 | 309 |
| June | 0 | 468 |
| July | 0 | 553 |
| August | 0 | 560 |
| September | 1 | 391 |
| October | 50 | 172 |
| November | 231 | 42 |
| December | 411 | 17 |
| Year (annual) | 1,704 | 2,721 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053902. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Conroe been warmer than normal lately?
2025 averaged 70.2°F, 2.5°F above the 1991-2020 normal of 67.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.4°F | +0.7°F | 52.24 |
| 2022 | 68.0°F | +0.3°F | 43.07 |
| 2023 | 70.1°F | +2.4°F | 38.47 |
| 2024 | 70.3°F | +2.6°F | 57.45 |
| 2025 | 70.2°F | +2.5°F | 40.19 |
Source: observed years: ACIS, station USW00053902. A year counts only with all twelve months complete.
How does Conroe's climate compare?
Conroe is warmer than 215 of the other 320 places with their own NOAA record in Texas, and wetter than 268. Across the 7,247 U.S. stations with normals, its annual mean of 67.7°F is warmer than 93%.
In the Köppen classification computed from these normals, Conroe is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Conroe share this climate record?
13 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- The Woodlands, TXalso near: Houston (16 mi, 70.5°F a year); Cleveland (29 mi, 66.6°F a year)116,916 people · 14 mi SW
- Willis, TX7,222 people · 7 mi NW
- Magnolia, TX6,506 people · 22 mi SW
- Pinehurst, TX4,008 people · 21 mi SW
- Shenandoah, TX3,839 people · 12 mi S
- Montgomery, TX2,860 people · 17 mi W
- Panorama Village, TX2,521 people · 5 mi W
- Deerwood, TX1,989 people · 7 mi SE
- Cut and Shoot, TX1,190 people · 4 mi E
- Grangerland, TX1,046 people · 9 mi SE
- New Waverly, TX1,014 people · 13 mi N
- Stagecoach, TX603 people · 23 mi SW
- Woodloch, TX179 people · 10 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Conroe's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Conroe. This page uses Conroe Montgomery County Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Conroe station USC00411956 | 5 mi SW | 245 ft | 69.7°F | 42°F | 95°F | 51.0 | – | February 24 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Conroe's climate
What is the coldest month in Conroe?
January, with a normal high of 62°F and a normal low of 39°F. The warmest is August (95°F by day, 72°F at night).
Does it snow in Conroe?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Conroe's NOAA station; the nearest record that keeps one, Cleveland (20 miles away), records 0 inches of snow in a normal year.
What is the rainiest month in Conroe?
October, with 5.52 in of precipitation in a normal year; the driest is February with 2.94 in.
What plant hardiness zone is Conroe in?
The USDA's 2023 map puts Conroe in zone 9a across its 4 ZIP code areas (9a in 77304, the largest). By the same method at Conroe's NOAA station, the coldest night of a typical year reaches 22°F (24 years, 1991-2020): zone 9a.
How late can frost come in Conroe?
In half of years the last 32°F night comes after March 11; in one year in ten it comes after April 3. Waiting until April 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Conroe in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Cleveland, TX20 miles from this station, 66.6°F a year
- Houston, TX26 miles from this station, 70.5°F a year
- Huntsville, TX29 miles from this station, 68.7°F a year
- Livingston, TX39 miles from this station, 68.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made