Gilbert, Arizona Weather
Thunder finally silent. Day 93 of summer. Read this microseason across nine climate regions →
Gilbert weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 6:54 AM MST · Open-Meteo
- TodaySep 21Overcast——101°79°—
- TuesdaySep 22Clear——98°74°-3°
- WednesdaySep 23Light Drizzle——93°79°-5°
- ThursdaySep 24Light Drizzle35%—98°80°+5°
- FridaySep 25Heavy Drizzle——97°79°-1°
- SaturdaySep 26Mostly Clear——101°87°+4°
- SundaySep 27Light Drizzle11%—95°84°-6°
Air quality now AQI 28 · Good
AQI 28 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 3:44 PM
- Moonset
- 1:12 AM
- In sign
- ♑︎ Capricorn
Thunder finally silent
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Gilbert at a glance
- Today vs. normal: Today averages 90°F (high 101°F, low 79°F), 5°F above the 85°F normal for Sep 21
- Last frost: February 1 (1991–2020 median, NOAA station 13 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant beans, squash, fall brassicas, carrots; harvest summer squash, winter squash
16-Day Forecast — Gilbert
- Mon100°80°2%
- Tue98°74°3%
- Wed93°79°8%
- Thu98°80°35%
- Fri97°79°9%
- Sat101°87°4%
- Sun95°84°11%
- Mon97°83°24%
- Tue99°87°13%
- Wed101°88°10%
- Thu104°89°5%
- Fri102°90°13%
- Sat99°87°14%
- Sun98°86°13%
- Mon94°81°13%
- Tue88°80°6%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Gilbert
Interactive wind and temperature map centered on Gilbert — it loads in your browser. Open the full weather map.
Right now in the garden
Peak growing season
As of September 21, the growing season is at its peak — the first frost (around December 11) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 18 to October 2 here. This city's planting calendar for September: plant beans, squash, fall brassicas, and carrots; harvest summer squash and winter squash.
SPC Convective Outlook
Storm Prediction Center — Gilbert
SPC includes Gilbert in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Gilbert
Gilbert sits in Maricopa County, where the year’s longest day runs 14h 22m of daylight and its shortest just 9h 57m — a swing of +4h 25m between the June and December solstices.
Phoenix, the state’s largest city, lies about 27 miles to the NW. The nearest town Gilbert tracks is Chandler, roughly 6 miles to the WSW.
Air quality in Gilbert
Air quality in Gilbert’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 72). See the full air-quality history for Gilbert.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | fall brassicas, carrots |
| February | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| March | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| April | squash | lettuce, peas, spinach, summer squash |
| May | squash | tomatoes, peppers, beans, summer squash, garlic |
| June | squash | tomatoes, peppers, summer squash, winter squash |
| July | squash | summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | beans, squash, fall brassicas, carrots | summer squash, winter squash |
| October | — | beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
Gilbert peaks at about 94°F in July and bottoms near 52°F in December; August brings the heaviest rain (1.7 inches) and June the least (0.0 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 53° | 0.8″ |
| February | 57° | 1.0″ |
| March | 63° | 1.0″ |
| April | 72° | 0.3″ |
| May | 82° | 0.0″ |
| June | 91° | 0.0″ |
| July | 94° | 0.7″ |
| August | 91° | 1.7″ |
| September | 88° | 0.8″ |
| October | 76° | 0.3″ |
| November | 62° | 0.8″ |
| December | 52° | 1.4″ |
Regional context
Similar climates Chandler, AZ, Mesa, AZ, Queen Creek, AZ
By modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Gilbert sees 53°F Januarys and 94°F Julys, a 41°F range, plus around 9 inches of precipitation.
Month by month, Gilbert's rain crests in August (1.7 inches) and ebbs in June (0.0 inches), though November through March out-rains May through September in total. The closest comparisons in Arizona are places like Chandler, AZ, Mesa, AZ and Queen Creek, AZ.
Gilbert's growing window opens around February 1, once Gilbert's overnight lows stop freezing — sow lettuce, chard, arugula, and mustard greens. In Gilbert, warm-season transplants — tomatoes, peppers, basil — wait two weeks past Gilbert's frost date. It shuts near December 11, when freezes return to Gilbert and tender plants need cover. In about half of years, Gilbert's last freeze comes after February 1.
Similar climates: Chandler, AZ, Mesa, AZ, Queen Creek, AZ, Sun Lakes, AZ, Goodyear Village, AZ.
Frequently asked
- When does it freeze in Gilbert?
- Frost typically leaves Gilbert by February 1 and returns to Gilbert near December 11.
- What is the rainy season in Gilbert?
- Gilbert sees its heaviest rain in August (around 1.7 inches), part of roughly 9 inches a year.
- What is the warmest month in Gilbert?
- July is Gilbert's warmest month, averaging about 94°F.
- What is the coldest month in Gilbert?
- Gilbert bottoms out in December, with a mean near 52°F.
- When can I start a vegetable garden in Gilbert?
- Gilbert's last frost (February 1) cues hardy greens; in Gilbert, hold heat-lovers two weeks past.
- What hardiness zone is Gilbert?
- Gilbert's USDA zone comes from its December mean (52°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Gilbert?
- Gilbert's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Gilbert?
- See this week's day-by-day rain chances for Gilbert in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Gilbert?
- Current conditions for Gilbert and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Gilbert forecast updated?
- The Gilbert forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Gilbert?
- Today's sunrise and sunset times for Gilbert are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Gilbert?
- The next few days in Gilbert's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Gilbert sits at 33.3°N; its climate zone is hot desert (Köppen approximation).
ZIP codes in Gilbert
- 85233
- 85234
- 85236
- 85244
- 85295
- 85296
- 85297
- 85298
- 85299