Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September marks a gentle change in average high-temperature, declining from August's tropical 88.2°F (31.2°C) to a warm 81.5°F (27.5°C). In Walsh, September's nights observe an average temperature dip to a refreshing 61.2°F (16.2°C).Heat index
In September, the heat index is estimated at 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In Walsh, the average relative humidity in September is 48%.Rainfall
In Walsh, during September, the rain falls for 9.8 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 94.4 rainfall days, and 12.44" (316mm) of precipitation is accumulated.Snowfall
In Walsh, snow does not fall in June through September.Daylight
In Walsh, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:33 pm MDT.
Sunshine
In Walsh, the average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Take precautions - Protection against sun damage is advised. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September in Walsh?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Walsh, CO
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is December (45.1°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is December (27.5°F).
Average pressure in September
Walsh, CO
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Walsh, CO
- Average wind speed in September: 12.1mph
The windiest month (with the highest average wind speed) is April (13.4mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).
Average humidity in September
Walsh, CO
- Average humidity in September: 48%
The months with the highest relative humidity are January and December (56%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Walsh, CO
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (2.32").
The driest months (with the least rainfall) are January and November (0.35").
Average rainfall days in September
Walsh, CO
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (2.2 days).
Average snowfall in September
Walsh, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Walsh, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Walsh, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Walsh, CO
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (25 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Walsh, CO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Walsh, CO
- Average cloud cover in September: 16
The months with the most cloud cover are February and April (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 14).
Average visibility in September
Walsh, CO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Walsh, Colorado, USA
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