Mertzon (TX) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Mertzon

Mertzon average temperature chart (Celsius) Mertzon average temperature chart (Fahrenheit)
Average monthly temperatures in Mertzon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.6 16.3 22 26.7 30.1 33.1 34.8 34.3 29.9 25.4 19.5 14.7
°F 56.4 61.4 71.5 80 86.2 91.5 94.6 93.7 85.7 77.7 67 58.4

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Mertzon monthly rainfall chart (mm) Mertzon monthly rainfall chart (inches)
Average monthly rainfall in Mertzon (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 20 26 22 40 71 57 34 51 84 58 26 20
inches 0.8 1 0.9 1.6 2.8 2.2 1.3 2 3.3 2.3 1 0.8
Rainy days 4 5 4 5 7 5 4 6 7 5 4 4

Average annual rainfall in Mertzon: 437.5mm (172.2 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Mertzon

Mertzon average daily sunshine chart
Average daily sunshine Mertzon
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.8 7.5 8.5 9.1 9.4 10.6 10.9 10.2 8.6 8.3 7.1 6.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Mertzon average minimum / maximum temperatures (Celsius) Mertzon average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Mertzon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -0.7 1.5 6.3 11.4 16 19.2 20.7 20.2 17.7 11.9 5.8 0.6
Max °C 13.9 16.7 22.4 27.1 30.5 33.4 35.2 34.6 30.2 25.7 19.8 15
Min °F 30.7 34.7 43.3 52.4 60.7 66.6 69.2 68.4 63.8 53.4 42.4 33.1
Max °F 43.9 48.4 57.7 66.6 73.8 79.3 82.2 81.3 75 65.8 55 46

Sea temperature

The graph below shows the average sea temperature.

Mertzon average sea temperature chart (Celsius) Mertzon average sea temperature chart (Fahrenheit)
Average sea temperature around Mertzon in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.3 15.9 16.9 19 21.7 24.6 26.7 27.8 27 24.2 20.9 18
°F 61.3 60.7 62.5 66.1 71.1 76.3 80.1 82 80.6 75.5 69.6 64.5

Wind speed

The graph below shows the average wind speed.

Mertzon average winspeed by month (km/h) Mertzon average winspeed by month (mph)
Average wind speed in Mertzon (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 19 21 21 19 19 17 16 16 16 17 17
mph 11 12 13 13 12 12 11 10 10 10 11 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Mertzon relative humidity averages
Average relative humidity in Mertzon
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
60% 59% 53% 53% 59% 58% 54% 57% 64% 64% 63% 62%