Climateby Month

Menifee, CA weather in September

NOAA 1991-2020 normals and daily records · Menifee all year

Menifee is hot and dry in September: highs average 92°F and nights drop to about 61°F. There are about 1 day with rain. Midday heat is the main thing to plan around.

Normal high
92°F
Normal low
61°F
Wet days
1
0.2 in total
Muggy days
1
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high96°F87°F
Normal low63°F57°F
Chance of a wet day2%3%
Sunrise / sunset6:22 am / 7:14 pm6:42 am / 6:34 pm
Daylight12.9 h11.9 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).

A typical September day

  1. 6 am61°Fdew point 52°F
  2. 9 am77°Fdew point 52°F
  3. Noon88°Fdew point 48°F
  4. 3 pm89°Fdew point 50°F
  5. 6 pm79°Fdew point 52°F
  6. 9 pm69°Fdew point 54°F

NOAA hourly normals (local standard time) from March AFB (13 mi away); average wind 5 mph; clear or few clouds in 82% of daytime hours, mostly cloudy or overcast in 12%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F2 of 30
  • Hot dayshigh 90°F or more22 of 30
  • Muggy daysdaily mean dew point 65°F or more1 of 30
  • Wet daysat least 0.01 in of rain or melted snow1 of 30
  • Notable rainat least 0.10 in0 of 30
  • Freezing nightslow 32°F or below0 of 30

Average days per September, counted from daily records for each year 1991-2020.

Rain in September

Normal precipitation is 0.2 in; a dry September brings about 0.0 in and a wet one about 0.08 in (25th and 75th percentiles). Days with half an inch or more are rare.

How September varies from year to year

  • Warmest September, 1991-20202020: average high 98°F
  • Coolest September2017: average high 88°F
  • Wettest September2005: 1.6 in
  • Driest September1992: no measurable precipitation
  • Highest reading115°F (September 6, 2020)
  • Lowest reading43°F (September 19, 2007)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

September compared with August and October

AugustSeptemberOctober
Normal high97°F92°F82°F
Normal low64°F61°F53°F
Wet days112
Comfortable days0210
Daylight13.4 h12.4 h11.3 h

Highs change by -5°F from August and -10°F into October.

Nearby alternatives in September

How Menifee ranks in September

  • Normal high24th warmest of 378 cities; 8th of 60 in California
  • Wet days20th driest of 378
  • Comfortable days250th most of 342

What to pack for Menifee in September

  • Light, breathable clothing – highs near 92°F
  • Layers – afternoons near 92°F but nights near 61°F

Heating and cooling

September has 3 heating degree days and 340 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.

Questions

How hot is Menifee in September?

The normal high is 92°F and the normal low is 61°F. From 1991 to 2020 the hottest September reading was 115°F (September 6, 2020).

Does it rain a lot in Menifee in September?

About 1 days in September have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest September in 1991-2020 was in 2005 (1.7 in); the driest was in 1992, with no measurable precipitation.

Is September a good time to visit Menifee?

September ranks 10th of 12 months on our comfort score for Menifee (42 out of 100). It has about 2 comfortable days and about 22 days at 90°F or hotter. The best months are March and April.

Where the numbers come from

  • Temperature, snowfall, snow depth and frost dates: San Jacinto (USC00047813), 11 mi ENE of the city center, 1,525 ft . NOAA normals and daily records, 1991-2020.
  • Rain: Elsinore (USC00042805), 12 mi WSW of the city center, 1,268 ft (215 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: March AFB (USW00023119), 13 mi NNW of the city center, 1,516 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: March Air Reserve Base (722860-23119), 13 mi NNW of the city center, 1,536 ft (53 ft higher than the city). Hourly observations, 1991-2020.