Weather in Horn Lake, Mississippi
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—84°71°
- SundayMay 17Overcast—88°65°
- MondayMay 18Light Showers16%89°68°
- TuesdayMay 19Showers50%88°69°
- WednesdayMay 20Light Showers69%81°67°
- ThursdayMay 21Heavy Drizzle52%79°66°
- FridayMay 22Drizzle52%83°67°
- PM 2.5
- 4.7 μg/m³
- PM 10
- 5.4 μg/m³
- NO₂
- 3.3 μg/m³
- Ozone
- 92.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 11:07 AM
- Moonset
- 1:22 AM
- In sign
- ♊︎ Gemini
Roses open on the Piedmont edge
Horn Lake at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: March 17 (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
Horn Lake's warmest month is July (~83°F mean) and its coldest is January (~42°F). Rainfall peaks in April (5.9 inches) and bottoms out in September (3.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 42° | 4.1″ | 6 |
| February | 46° | 4.5″ | 7 |
| March | 54° | 5.7″ | 8 |
| April | 63° | 5.9″ | 7 |
| May | 72° | 5.3″ | 7 |
| June | 80° | 4.0″ | 6 |
| July | 83° | 4.8″ | 6 |
| August | 82° | 3.4″ | 5 |
| September | 76° | 3.0″ | 4 |
| October | 65° | 4.0″ | 5 |
| November | 53° | 4.7″ | 6 |
| December | 45° | 5.5″ | 7 |
Regional context
Horn Lake sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Jackson, MS, Gulfport, MS, Hattiesburg, MS, Southaven, MS, Biloxi, MS.
Frequently asked
- When does it freeze in Horn Lake?
- Horn Lake's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Horn Lake?
- April is the wettest month with about 5.9 inches of rain on average; the city receives roughly 55 inches annually.
- What is the warmest month in Horn Lake?
- July is typically warmest, averaging about 83°F.
- What is the coldest month in Horn Lake?
- January is typically coldest, averaging about 42°F.
- When can I start a vegetable garden in Horn Lake?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Horn Lake get?
- Horn Lake averages about 74 rainy days per year.
- What hardiness zone is Horn Lake?
- Horn Lake's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Horn Lake, Mississippi sits in a humid subtropical climate zone. January means hover near 42°F while July averages 83°F — a 41°F seasonal swing.
Across the year, Horn Lake receives about 55 inches of precipitation spread over roughly 74 rainy days.
The rhythm of the year is set by latitude (35.0°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.