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Measurable snow is rare in Conroe: the 1991–2020 normal rounds to zero — only a trace in most years, and nights reach freezing on about 27 days a year. When snow or ice does arrive, it causes outsized trouble because roads are rarely treated — watch for Winter Weather Advisories and Freeze Warnings.
| Month | Snowfall | Days 1″+ | Days with snow cover | Freezing nights | Avg. low |
|---|---|---|---|---|---|
| November | 0″ | 0 | 0 | 3 | 47°F |
| December | 0″ | 0 | 0 | 8 | 41°F |
| January | 0″ | 0 | 0 | 10 | 39°F |
| February | 0″ | 0 | 0 | 5 | 43°F |
| March | 0″ | 0 | 0 | 2 | 49°F |
| Year | 0″ | 0 | 0 | 27 |
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Montgomery (15 mi from the city center, +95 ft elevation difference); temperatures at Conroe Montgomery Co Airport. Averages smooth out big years: single winters can bring half or double the normal.
All Texas winter alerts and cities → · National winter storm map → · Frost dates by ZIP code →
0 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Montgomery station, 15 miles away).
This page checks the National Weather Service for active alerts at Conroe's location every time you open it; the box at the top lists any winter storm, winter weather, cold or freeze alert in effect right now.
About 27 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 39 °F.