Seco Mines reaches 100° on about 53 days a year, more than all but 140 U.S. towns
Nights in January average 41°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 59° apart. By precipitation alone, it ranks drier than 90% of U.S. towns. Garden planting can start around February 19; autumn frost returns near December 1.
A year in Seco Mines at a glance
Each month’s typical high and low, and what it brings.
What stands out about Seco Mines’ climate
Compared with towns across the U.S., with Seco Mines’ place in Texas beside it.
What a year in Seco Mines feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 287 frost-free days a year
In half of years the last 32° night comes by February 19 and the first by December 1. Frost and day counts come from NOAA’s station at Eagle Pass 3n, TX, 1.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Seco Mines’ center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 25°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 19 inches of rain a year
September is the wettest month and February the driest. Rain falls on about 45 days a year. Snow is rare: about 0.0" in a normal year at Eagle Pass 3n, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Seco Mines
30% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Eagle Pass 3n, TX.
Living with Seco Mines’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
287 frost-free days in zone 9a. The last frost comes by Feb 19 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 1.
Months with highs of 62–84° and lows of 40° or more: January, February, March, November and December.
Parks & trails →Of the yearly building losses FEMA expects in Seco Mines from natural hazards, river flooding is the largest share (64%); heat waves, cold waves, winter storms and ice storms together are 17%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Seco Mines and its neighbors
Every town next door is within a degree of Seco Mines in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Seco Mines’, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Seco Mines, TX | 41° | 99° | 19" | 0.0" |
| Plumas Lake, CA | 39° | 97° | 19" | 0.0" |
| Oro Valley, AZ | 38° | 100° | 13" | 0.0" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
| Sunland Park, NM | 32° | 96° | 9" | 2.0" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Seco Mines averaged 0.9° warmer than the 1900s. The biggest change is in March (+2.2°).
A smaller shift than in 83% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Seco Mines compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Seco Mines’ place among Texas’.
Seco Mines weather by month
Highs, lows and precipitation from NOAA’s grid at Seco Mines’ center; snow, wet days and snow on the ground from Eagle Pass 3n, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 41° | 0.7" | 0.0" | 4 | 0 | 48° – 58° |
| February | 71° | 45° | 0.7" | 0.0" | 4 | 0 | 51° – 65° |
| March | 79° | 53° | 1.2" | 0.0" | 4 | 0 | 59° – 71° |
| April | 86° | 59° | 1.5" | 0.0" | 4 | 0 | 66° – 79° |
| May | 91° | 68° | 2.7" | 0.0" | 5 | 0 | 75° – 84° |
| June | 97° | 74° | 2.1" | 0.0" | 4 | 0 | 81° – 89° |
| July | 99° | 75° | 1.8" | 0.0" | 3 | 0 | 81° – 91° |
| August | 99° | 75° | 1.6" | 0.0" | 3 | 0 | 84° – 90° |
| September | 93° | 70° | 3.2" | 0.0" | 5 | 0 | 77° – 86° |
| October | 85° | 61° | 1.8" | 0.0" | 4 | 0 | 70° – 76° |
| November | 74° | 50° | 0.9" | 0.0" | 4 | 0 | 57° – 68° |
| December | 66° | 42° | 0.7" | 0.0" | 4 | 0 | 48° – 58° |
| Year | 84° | 59° | 18.9" | 0.0" | 45 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 51° to 65°. October is the most reliable, staying within 5°.
Where Seco Mines’ numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Seco Mines’ center.
- Snow: Eagle Pass 3n, TX (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Eagle Pass 3n, TX, 1.6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Seco Mines’ climate
What is the weather like in Seco Mines?
A typical July afternoon reaches 99°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 89% of U.S. towns; hotter July afternoons than all but 175 U.S. towns.
How cold does it get in Seco Mines in winter?
January nights average 41°. About 13 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 48°.
How much snow does Seco Mines get?
About 0.0 inches in a normal winter at Eagle Pass 3n, TX, so most winters see none.
How hot does it get in Seco Mines?
July, with a typical high of 99° and a low of 75°. About 151 days a year reach 90° and 53 reach 100° (Eagle Pass 3n, TX).
When is the first and last frost in Seco Mines?
In half of years the last spring frost (32°) comes by February 19 and the first fall frost by December 1, about 287 frost-free days, at Eagle Pass 3n, TX.
What growing zone is Seco Mines in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 25°.
What is the best time of year to visit Seco Mines?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Seco Mines getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 83% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Seco Mines.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.