September weather forecast
Chico, TX

Share

Weather in September

September, the first month of the autumn in Chico, is also a hot month, with an average temperature fluctuating between 68°F (20°C) and 86.9°F (30.5°C).

Temperature

As September begins, there is a minor decrease in the average high-temperature, softly falling from a very hot 95.5°F (35.3°C) in August to a tropical 86.9°F (30.5°C). In September, the average low-temperature is a pleasant 68°F (20°C).

Heat index

The heat index value for September is computed to be a very hot 95°F (35°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity in Chico is 64%.

Rainfall

In Chico, in September, it is raining for 12.5 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 125.7 rainfall days, and 25.28" (642mm) of precipitation is accumulated.

Snowfall

In Chico, snow does not fall in April through November.

Daylight

In Chico, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:16 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The high-temperature, in September, in Chico, is 86.9°F (30.5°C), while the low-temperature averages to 68°F (20°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is computed to be 95°F (35°C).

What is the average humidity in September?

The average relative humidity in September is 64%.

How much does it rain in September?

In Chico, in September, it is raining for 12.5 days, with typically 2.68" (68mm) of accumulated precipitation.

When it does not snow in Chico?

In Chico, snow does not fall in April through November.

How many hours of daylight does Chico have in September?

In Chico, the average day length in September is 12h and 22min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:05 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:16 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.5h.

How high is the UV index in September?

In Chico, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Chico, TX

Average temperature in September - Chico, TX
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The months with the lowest average high temperature are January and December (54.5°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

Average pressure in September
Chico, TX

Average pressure in September - Chico, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in September
Chico, TX

Average wind speed in September - Chico, TX
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).

Average humidity in September
Chico, TX

Average humidity in September - Chico, TX
  • Average humidity in September: 64%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).

Average rainfall in September
Chico, TX

Average rainfall in September - Chico, TX
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is January (1.22").

Average rainfall days in September
Chico, TX

Average rainfall days in September - Chico, TX
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (5.7 days).

Average snowfall in September
Chico, TX

Average snowfall in September - Chico, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Chico, TX

Average snowfall days in September - Chico, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Chico, TX

Average daylight in September / Average sunshine in September - Chico, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in September
Chico, TX

Average sunshine days in September - Chico, TX
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is May (13.4 days).

Average UV index in September
Chico, TX

Average UV index in September - Chico, TX
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Chico, TX

Average cloud cover in September - Chico, TX
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in September
Chico, TX

Average visibility in September - Chico, TX
  • 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).

Chico, Texas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location