Weather in Clarksville, Indiana
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Thunderstorm48%78°61°
- SundayMay 17Overcast37%89°61°
- MondayMay 18Overcast14%91°63°
- TuesdayMay 19Showers54%82°65°
- WednesdayMay 20Showers64%67°58°
- ThursdayMay 21Light Drizzle34%66°53°
- FridayMay 22Light Drizzle28%72°54°
- PM 2.5
- 8.2 μg/m³
- PM 10
- 8.9 μg/m³
- NO₂
- 5.5 μg/m³
- Ozone
- 89.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 10:38 AM
- Moonset
- 1:15 AM
- In sign
- ♊︎ Gemini
Roses open on the Piedmont edge
Clarksville at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: April 6 (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
Warm-season window is open
As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Clarksville's warmest month is July (~78°F mean) and its coldest is January (~34°F). Rainfall peaks in May (5.8 inches) and bottoms out in August (3.3 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 34° | 3.8″ | 7 |
| February | 38° | 3.7″ | 7 |
| March | 47° | 5.1″ | 8 |
| April | 57° | 5.3″ | 9 |
| May | 66° | 5.8″ | 9 |
| June | 74° | 4.9″ | 8 |
| July | 78° | 4.7″ | 8 |
| August | 77° | 3.3″ | 6 |
| September | 70° | 3.8″ | 5 |
| October | 59° | 4.2″ | 6 |
| November | 47° | 3.9″ | 6 |
| December | 38° | 4.6″ | 8 |
Regional context
Clarksville sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Indianapolis, IN, Evansville, IN, Lafayette, IN, Bloomington, IN, Fishers, IN.
Frequently asked
- When does it freeze in Clarksville?
- Clarksville's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Clarksville?
- May is the wettest month with about 5.8 inches of rain on average; the city receives roughly 53 inches annually.
- What is the warmest month in Clarksville?
- July is typically warmest, averaging about 78°F.
- What is the coldest month in Clarksville?
- January is typically coldest, averaging about 34°F.
- When can I start a vegetable garden in Clarksville?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Clarksville get?
- Clarksville averages about 85 rainy days per year.
- What hardiness zone is Clarksville?
- Clarksville'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
Clarksville, Indiana sits in a humid subtropical climate zone. January means hover near 34°F while July averages 78°F — a 43°F seasonal swing.
Across the year, Clarksville receives about 53 inches of precipitation spread over roughly 85 rainy days.
The rhythm of the year is set by latitude (38.3°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.