30-year climate normals
Irion County Climate and Weather Averages
Hottest month: August
94.6°average daily high. The coldest month is January, averaging a low of 29.3°F.
Irion County gets 21.57" of precipitation a year, and 33% of it falls in Aug, Sep, Oct.
Temperature through the year
Each bar spans the average daily low to the average daily high for that month.
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| January | 58.2° | 29.3° | 0.89" |
| February | 63.5° | 33.1° | 1.03" |
| March | 70.5° | 40.5° | 1.52" |
| April | 79.5° | 48.5° | 1.57" |
| May | 86.9° | 58.5° | 2.64" |
| June | 92.6° | 67.4° | 2.54" |
| July | 94.2° | 69.6° | 1.90" |
| August | 94.6° | 69.4° | 2.35" |
| September | 87.4° | 62.0° | 2.59" |
| October | 79.5° | 50.9° | 2.17" |
| November | 67.8° | 38.5° | 1.47" |
| December | 60.1° | 30.7° | 0.90" |
Rainfall by month
Precipitation is spread fairly evenly through the year here, with 33% falling in the wettest three months (Aug, Sep, Oct).
What this climate costs you
Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.
These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Irion County, where electricity is one line of eight.
Common questions
What is the weather like in Irion County?
Irion County averages a high of 94.6°F in August and a low of 29.3°F in January. Annual precipitation is 21.57 inches, with essentially no snow.
When is the rainy season in Irion County?
The wettest stretch is Aug, Sep, Oct, which accounts for 33% of the year's precipitation. Precipitation is relatively evenly distributed across the year.
How hot does it get in Irion County?
The average daily high in August, the hottest month, is 94.6°F. That drives 2,313 cooling degree days a year, which is what your air conditioning has to work against.
Does it snow in Irion County?
The weather station used for Irion County, MERTZON 12NNW, TX US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 21.57 inches above, measured as melted water.
Sources
- Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station MERTZON 12NNW, TX US (USC00415861), 11 miles from the county centroid.
- Heating and cooling degree days: NOAA, same station and period.
- Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
- Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, Texas residential average.
- Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.