Climateby Month

Deltona, FL climate by month

NOAA 1991-2020 normals · 32 ft elevation

Deltona has hot and oppressively humid summers and mild winters. Highs peak at 92°F in July and fall to 70°F in January. The wettest month is August (about 18 wet days) and the driest is March (about 7). By our comfort score the best months are January, February and March.

Warmest month
92°F
July normal high
Coldest month
49°F
January normal low
Wet days a year
124
54.0 in of precipitation
Muggy days a year
173
dew point 65°F or higher

How warm is Deltona?

Normal highs range from 70°F in January to 92°F in July.

40°50°60°70°80°90°100° January: normal high 70°F (21°C), low 49°F (9°C) 70° 49° February: normal high 73°F (23°C), low 52°F (11°C) March: normal high 77°F (25°C), low 56°F (13°C) April: normal high 82°F (28°C), low 61°F (16°C) May: normal high 87°F (31°C), low 67°F (19°C) June: normal high 90°F (32°C), low 72°F (22°C) July: normal high 92°F (33°C), low 74°F (23°C) 92° 74° August: normal high 92°F (33°C), low 75°F (24°C) September: normal high 89°F (32°C), low 73°F (23°C) October: normal high 84°F (29°C), low 67°F (19°C) November: normal high 77°F (25°C), low 59°F (15°C) December: normal high 72°F (22°C), low 53°F (12°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Deltona?

August has the most wet days (about 18); the year brings about 54 in of precipitation.

January: 8 wet days February: 7 wet days March: 7 wet days 7 April: 7 wet days May: 8 wet days June: 16 wet days July: 16 wet days August: 18 wet days 18 September: 14 wet days October: 9 wet days November: 7 wet days December: 7 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Deltona?

Muggy days peak in July, at about 31 days.

January: 1 muggy days 1 February: 2 muggy days March: 2 muggy days April: 6 muggy days May: 16 muggy days June: 29 muggy days July: 31 muggy days 31 August: 31 muggy days September: 29 muggy days October: 18 muggy days November: 7 muggy days December: 3 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Orlando Sanford Airport, 8.4 mi S of the city center.

How much daylight?

Daylight ranges from about 10.3 hours in December to 14.0 hours in June.

January: 10.5 hours of daylight February: 11.2 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.6 hours of daylight June: 14.0 hours of daylight 14.0 July: 13.8 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.5 hours of daylight November: 10.7 hours of daylight December: 10.3 hours of daylight 10.3 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Deltona, 1991-2020
MonthHighLowPrecip.Wet daysMuggy daysDaylight
January 70°F49°F 2.8 in8 1 10.5 h
February 73°F52°F 2.5 in7 2 11.2 h
March 77°F56°F 3.2 in7 2 12.0 h
April 82°F61°F 2.5 in7 6 12.9 h
May 87°F67°F 3.4 in8 16 13.6 h
June 90°F72°F 8.2 in16 29 14.0 h
July 92°F74°F 8.2 in16 31 13.8 h
August 92°F75°F 8.1 in18 31 13.2 h
September 89°F73°F 6.3 in14 29 12.3 h
October 84°F67°F 4.3 in9 18 11.5 h
November 77°F59°F 2.0 in7 7 10.7 h
December 72°F53°F 2.5 in7 3 10.3 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Deltona

By our comfort score, the best months are January, February and March.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 661640
Feb 671440
Mar 671551
Apr 59743
May 462613
Jun 3401220
Jul 3201126
Aug 3001225
Sep 3301017
Oct 47364
Nov 611240
Dec 631440

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Deltona

The last spring frost typically comes around Jan 26, and the first fall frost around Jan 12, leaving 359 frost-free days in a typical year.

Frost and freeze dates for Deltona
Typical date1 year in 10
Last spring frost (32°F)Jan 26after Feb 24
First fall frost (32°F)Jan 12before Dec 20
Hard freeze (28°F)in about 15% of years; no typical date
Frost-free season359 daysunder 318 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Sanford (USC00087982), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Florida.

Hottest and coldest readings, 1991-2020

The highest reading was 103°F (July 1, 1998); the lowest was 26°F (February 5, 1996).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Deltona

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Sanford (USC00087982), 6.0 mi S of the city center, 12 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Orlando Sanford Airport (USW00012854), 8.4 mi S of the city center, 55 ft . NOAA normals and daily records, 1991-2020.
  • Cloud cover: Orlando Executive Airport (USW00012841), 25 mi S of the city center, 108 ft (76 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Orlando Sanford Airport (722057-12854), 8.4 mi S of the city center, 49 ft . Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error