Weather in Richardson, Texas
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 11:41 AM
- Moonset
- 1:44 AM
- In sign
- ♊︎ Gemini
Roses open on the Piedmont edge
Richardson at a glance
- Today vs. normal: NaN°F below the seasonal normal for this latitude
- Last frost: March 5 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Peak growing season
As of May 17, 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.
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.