Richardson, Texas Weather
Fireflies pulse through the magnolias. Day 78 of spring. Read this microseason across nine climate regions →
Richardson weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Drizzle32%0.03″87°72°—
- FridayJun 5Overcast23%—82°73°-5°
- SaturdayJun 6Light Showers69%0.03″86°72°+4°
- SundayJun 7Showers57%—90°70°+4°
- MondayJun 8Overcast10%—92°74°+2°
- TuesdayJun 9Partly Cloudy——92°75°0°
- WednesdayJun 10Mostly Clear——94°75°+2°
Ozone at AQI 39. AQI up 8 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
- Present
- AQI 39
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 5.7 µg/m³, PM10 at 6.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- Recent rain
- 1h in last 6h
- Pattern
- background
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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:11 AM
- Moonset
- 3:50 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Richardson at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: March 5 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Richardson
SPC has placed Richardson in the General Thunderstorms category for severe thunderstorms today.
- 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. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Richardson experiences its warmest month in July (~85°F mean) and its coldest in January (~46°F). Rain peaks in October at 5.3 inches and reaches its low point in July at 2.2 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 46° | 2.8″ | 5 |
| February | 50° | 3.4″ | 5 |
| March | 58° | 3.6″ | 6 |
| April | 65° | 3.5″ | 5 |
| May | 73° | 5.2″ | 7 |
| June | 81° | 3.8″ | 5 |
| July | 85° | 2.2″ | 4 |
| August | 85° | 2.5″ | 4 |
| September | 77° | 3.3″ | 4 |
| October | 67° | 5.3″ | 6 |
| November | 56° | 3.0″ | 4 |
| December | 48° | 3.4″ | 4 |
Regional context
Richardson belongs to the humid subtropical climate region, sharing similar temperature bands, seasonal rhythms, and growing conditions with neighboring cities.
Similar climates: Houston, TX, Dallas, TX, San Antonio, TX, Austin, TX, Fort Worth, TX.
Naturalist notes
By late May, female eastern bluebirds are likely feeding a second brood in nest boxes, their timing cued by lengthening days and steady insect emergence.
The waxing crescent moon of late spring hangs low in the western sky after sunset, its horns tilted northward as Venus climbs toward its June elongation.
Frequently asked
- When does it freeze in Richardson?
- Richardson's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Richardson?
- October is the wettest month with about 5.3 inches of rain on average; the city receives roughly 42 inches annually.
- What is the warmest month in Richardson?
- July is typically the warmest month, averaging about 85°F.
- What is the coldest month in Richardson?
- January is typically the coldest month, averaging about 46°F.
- When can I start a vegetable garden in Richardson?
- Cool-season crops such as peas and lettuce can be sown near the last spring frost around mid-March; warm-season crops like tomatoes and peppers should wait 1–2 weeks after that.
- How many rainy days does Richardson get?
- Richardson averages about 57 rainy days per year.
- What hardiness zone is Richardson?
- Richardson's USDA hardiness zone reflects its lowest average winter temperature; the current zone designation can be checked through the USDA's online lookup using the city ZIP code.
Climate
Richardson, Texas falls within a humid subtropical climate zone. January averages near 46°F, while July averages 85°F — a 39°F spread between winter and summer.
The city receives about 42 inches of precipitation annually, distributed across roughly 57 rainy days.
Latitude (33.0°N), distance from large water bodies, and local elevation combine to shape the growing calendar, frost likelihood, and daily weather patterns.