Slidell (LA) monthly weather averages

Contents

Average daytime temperature

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

Slidell average temperature chart (Celsius) Slidell average temperature chart (Fahrenheit)
Average monthly temperatures in Slidell (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 15.3 17.3 21.1 25.1 28.7 31.5 32.4 32.2 30.2 26.2 21.1 17.2
°F 59.6 63.1 69.9 77.2 83.6 88.8 90.4 89.9 86.3 79.1 69.9 63

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.

Slidell monthly rainfall chart (mm) Slidell monthly rainfall chart (inches)
Average monthly rainfall in Slidell (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 137 143 137 128 126 126 163 157 135 72 110 137
inches 5.4 5.6 5.4 5 5 4.9 6.4 6.2 5.3 2.9 4.3 5.4
Rainy days 10 9 9 7 8 11 14 13 10 6 8 10

Average annual rainfall in Slidell: 1510.4mm (594.6 inches)

Average daily sunshine

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

Slidell average daily sunshine chart
Average daily sunshine Slidell
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 6.5 7.7 9.1 9.5 9.5 8.7 8.5 8 8.3 6.5 5.8

Day / night temperatures

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

Slidell average minimum / maximum temperatures (Celsius) Slidell average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Slidell (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 5 6.7 10.1 14.2 17.9 21 22.1 22 20.2 14.2 9.9 6.8
Max °C 15.6 17.6 21.4 25.4 29 31.8 32.7 32.4 30.4 26.5 21.4 17.5
Min °F 41 44 50.1 57.6 64.1 69.8 71.8 71.6 68.4 57.5 49.7 44.2
Max °F 50.5 53.8 60.3 67.6 74.1 79.5 81.3 81 77.5 68.5 60.1 53.8

Sea temperature

The graph below shows the average sea temperature.

Slidell average sea temperature chart (Celsius) Slidell average sea temperature chart (Fahrenheit)
Average sea temperature around Slidell in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 17.2 16.8 18 20.9 24.7 28.2 29.5 29.7 28.3 24.9 21.5 19
°F 63 62.2 64.4 69.5 76.5 82.8 85.2 85.4 83 76.8 70.7 66.2

Wind speed

The graph below shows the average wind speed.

Slidell average winspeed by month (km/h) Slidell average winspeed by month (mph)
Average wind speed in Slidell (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 16 17 16 14 12 10 10 12 12 14 15
mph 10 10 10 10 9 7 6 6 7 8 9 9

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.

Slidell relative humidity averages
Average relative humidity in Slidell
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 72% 72% 72% 73% 75% 78% 79% 77% 74% 76% 76%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Slidell weather stats

Slidell weather statistics
Hottest month: July 32.4°C 90.3°F
Driest month: October 72mm 2.8ins
Sunniest month: October 8.3hrs
Coldest month: January 15.3°C 59.5°F
Wettest month: July 163mm 6.4ins
Warmest sea: August 29.7°C 85.5°F
Map showing location of Slidell (30.27519, -89.78117) Slidell map pin © Google

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