September weather forecast
Lincoln, CA

Share

Weather in September

The first month of the autumn, September, is still a tropical month in Lincoln, California, with an average temperature ranging between max 87.4°F (30.8°C) and min 58.8°F (14.9°C).

Temperature

With the onset of September, Lincoln experiences a modest temperature adjustment, with the average high-temperature gently receding from 93.2°F (34°C) in August to a still tropical 87.4°F (30.8°C). Despite a stark disparity with daily highs, Lincoln records an average nighttime temperature of 58.8°F (14.9°C) in September.

Heat index

September's average heat index is calculated to be a tropical 87.8°F (31°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The average relative humidity in September is 40%.

Rainfall

In Lincoln, during September, the rain falls for 2.5 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Lincoln, during the entire year, the rain falls for 80 days and collects up to 21.85" (555mm) of precipitation.

Snowfall

In Lincoln, snow does not fall in January through November.

Daylight

In Lincoln, California, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm PDT.

Sunshine

In September, the average sunshine is 11.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Lincoln in September?

September temperatures vary between a high-temperature of 87.4°F (30.8°C) and a low-temperature of 58.8°F (14.9°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September in Lincoln, California, is 40%.

How much does it rain in September?

In Lincoln, during September, the rain falls for 2.5 days and regularly aggregates up to 0.24" (6mm) of precipitation.

When it does not snow?

In Lincoln, California, snow does not fall in January through November.

How many hours of daylight does Lincoln have in September?

The average day length in September is 12h and 25min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 11.2h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Lincoln, CA

Average temperature in September - Lincoln, CA
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is December (54.1°F).

  • Average low temperature in September: 58.8°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).

Average pressure in September
Lincoln, CA

Average pressure in September - Lincoln, CA
  • Average pressure in September: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Lincoln, CA

Average wind speed in September - Lincoln, CA
  • Average wind speed in September: 4.4mph

The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

Average humidity in September
Lincoln, CA

Average humidity in September - Lincoln, CA
  • Average humidity in September: 40%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (39%).

Average rainfall in September
Lincoln, CA

Average rainfall in September - Lincoln, CA
  • Average rainfall in September: 0.24"

The wettest month (with the highest rainfall) is March (4.09").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in September
Lincoln, CA

Average rainfall days in September - Lincoln, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is July (0.9 days).

Average snowfall in September
Lincoln, CA

Average snowfall in September - Lincoln, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Lincoln, CA

Average snowfall days in September - Lincoln, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Lincoln, CA

Average daylight in September / Average sunshine in September - Lincoln, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Lincoln, CA

Average sunshine days in September - Lincoln, CA
  • Average sunshine days in September: 26.9 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (15.9 days).

Average UV index in September
Lincoln, CA

Average UV index in September - Lincoln, CA
  • Average UV index in September: 5

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

Average cloud cover in September
Lincoln, CA

Average cloud cover in September - Lincoln, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in September
Lincoln, CA

Average visibility in September - Lincoln, CA
  • 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).

Lincoln, California, USA

Weather forecast for your location

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