Climateby Month

Pomona, CA weather in March

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

Expect mild weather with some rain in Pomona in March, with highs near 72°F and lows near 49°F. Rain falls on about 7 days. Great for outdoor plans.

Normal high
72°F
Normal low
49°F
Wet days
7
3.4 in total
Daylight
12.0 h

How March changes from start to finish

Normal values at the start and end of March
March 1March 31
Normal high70°F74°F
Normal low48°F49°F
Chance of a wet day25%18%
Sunrise / sunset6:19 am / 5:47 pm6:39 am / 7:10 pm
Daylight11.5 h12.5 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 March day

  1. 6 am51°Fdew point 42°F
  2. 9 am58°Fdew point 42°F
  3. Noon67°Fdew point 40°F
  4. 3 pm68°Fdew point 42°F
  5. 6 pm63°Fdew point 42°F
  6. 9 pm58°Fdew point 44°F

NOAA hourly normals (local standard time) from Burbank Glendale Pasadena Airport (36 mi away); average wind 5 mph; clear or few clouds in 69% of daytime hours, mostly cloudy or overcast in 27%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)17 of 31
  • Hot dayshigh 90°F or more1 of 31
  • Wet daysat least 0.01 in of rain or melted snow7 of 31
  • Notable rainat least 0.10 in4 of 31
  • Freezing nightslow 32°F or below0 of 31

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

Rain in March

Normal precipitation is 3.4 in; a dry March brings about 1.1 in and a wet one about 4.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How March varies from year to year

  • Warmest March, 1991-20202015: average high 81°F
  • Coolest March2006: average high 63°F
  • Wettest March1995: 12.6 in
  • Driest March1997: 0.01 in
  • Highest reading94°F (March 14, 2013)
  • Lowest reading33°F (March 12, 2006)

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

March compared with February and April

FebruaryMarchApril
Normal high68°F72°F76°F
Normal low46°F49°F51°F
Wet days874
Comfortable days121716
Daylight11.0 h12.0 h13.1 h

Highs change by +4°F from February and +4°F into April.

Nearby alternatives in March

How Pomona ranks in March

  • Normal high75th warmest of 378 cities; 9th of 60 in California
  • Wet days80th driest of 378

Heating and cooling

March has 172 heating degree days and 23 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.

Questions

How hot is Pomona in March?

The normal high is 72°F and the normal low is 49°F. From 1991 to 2020 the hottest March reading was 94°F (most recently on March 14, 2013).

Does it rain a lot in Pomona in March?

About 7 days in March have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest March in 1991-2020 was in 1995 (12.6 in); the driest was in 1997 (0.01 in).

Is March a good time to visit Pomona?

March ranks 3rd of 12 months on our comfort score for Pomona (70 out of 100). It has about 17 comfortable days (judged by temperature only) and about 1 day at 90°F or hotter. The best months are March, April and May.

Where the numbers come from

  • Temperature: Ontario Intl Airport (USW00003102), 8.7 mi E of the city center, 949 ft (100 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Rain: San Gabriel Canyon PH (USC00047776), 11 mi NW of the city center, 744 ft (105 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Covina City Yard Fc387b (USC00042090), 7.7 mi WNW of the city center, 607 ft (242 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Frost dates: Pomona/Fairplex (USC00047050), 2.0 mi NNW of the city center, 999 ft (150 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Burbank Glendale Pasadena Airport (USW00023152), 36 mi WNW of the city center, 741 ft (108 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Not available for this location: daily humidity and wind (no station close enough or similar enough in elevation).