Frost Dates for Kittanning, PA 16201
Last spring frost May 13 · First fall frost October 5 · 145 frost-free days · USDA Zone 6b
ZIP 16201 has about 17,000 people.
Moderate season: 145 frost-free days. Spring frost risk spans April 25–May 31 (36 days). Fall frost risk spans September 19–October 21 (32 days).
Frost probability for 16201
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 31 | May 13 | April 25 |
| Fall (first frost) | September 19 | October 5 | October 21 |
Dates come from NOAA 1971–2000 freeze probabilities at SALINA 3 W (33.9 km away); the 50% date is the median year.
Which crops fit a 145-day season in Kittanning
In Kittanning (145 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 18 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 8 | May 27–Jun 3 | 103 | fits: 80 days to maturity, 103 available after May 27. | Jun 5 |
| Pepper | Apr 1 | May 27–Jun 3 | 103 | fits: 75 days to maturity, 103 available after May 27. | Jun 10 |
| Lettuce | Mar 18 | Apr 15–Apr 22 | 180 | two-plantings: Plant Apr 15 and again by Aug 14; both mature before Oct 12. | Aug 14 |
| Carrots | — | Apr 22–Apr 29 | 187 | fits: 70 days to maturity, 187 available after Apr 22. | Aug 3 |
| Cucumber | Apr 22 | May 27–Jun 3 | 117 | fits: 60 days to maturity, 117 available after May 27. | Jul 9 |
| Beans | — | May 20–Jun 3 | 131 | fits: 60 days to maturity, 131 available after May 20. | Jul 16 |
| Peas | — | Mar 18–May 27 | 208 | fits: 65 days to maturity, 208 available after Mar 18. | Jul 25 |
| Zucchini | Apr 29 | May 27–Jun 3 | 117 | fits: 55 days to maturity, 117 available after May 27. | Jul 14 |
| Onion | Feb 18 | Apr 15–Apr 29 | 180 | fits: 100 days to maturity, 180 available after Apr 15. | — |
| Spinach | — | Mar 18–May 6 | 222 | two-plantings: Plant Mar 18 and again by Sep 2; both mature before Oct 26. | Sep 2 |
| Kale | Mar 4 | Apr 15–Apr 29 | 194 | two-plantings: Plant Apr 15 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Broccoli | Mar 18 | Apr 15–Apr 29 | 180 | fits: 80 days to maturity, 180 available after Apr 15. | Jul 10 |
| Cabbage | Mar 18 | Apr 15–Apr 29 | 194 | fits: 70 days to maturity, 194 available after Apr 15. | Aug 3 |
| Radish | — | Mar 18–Jun 10 | 208 | two-plantings: Plant Mar 18 and again by Sep 3; both mature before Oct 12. | Sep 3 |
| Beets | — | Mar 18–Jun 10 | 208 | two-plantings: Plant Mar 18 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Potatoes | — | Apr 29–May 6 | 166 | fits: 90 days to maturity, 166 available after Apr 29. | — |
| Garlic | — | Oct 5 | 250 | overwinter: Plant Oct 5 to Oct 26; harvest the following summer. | Oct 26 |
| Strawberry | — | Apr 8–Jun 3 | 201 | perennial: A perennial: plant Apr 8; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 15 | May 20–May 27 | 117 | fits: 75 days to maturity, 117 available after May 20. | Jun 17 |
| Pumpkin | Apr 29 | May 27–May 27 | 110 | fits: 100 days to maturity, 110 available after May 27. | — |
| Cauliflower | Apr 1 | May 6–May 20 | 159 | fits: 75 days to maturity, 159 available after May 6. | Jul 15 |
| Swiss Chard | Mar 18 | Apr 29–Apr 29 | 166 | two-plantings: Plant Apr 29 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Arugula | — | Mar 18–Jun 10 | 222 | two-plantings: Plant Mar 18 and again by Sep 2; both mature before Oct 26. | Sep 2 |
| Brussel Sprouts | Mar 18 | Apr 15–Apr 29 | 194 | fits: 100 days to maturity, 194 available after Apr 15. | Jul 4 |
| Butternut Squash | Apr 29 | May 27–Jun 3 | 110 | fits: 100 days to maturity, 110 available after May 27. | — |
| Eggplant | Mar 25 | May 27–Jun 3 | 103 | fits: 70 days to maturity, 103 available after May 27. | Jun 15 |
| Okra | Apr 15 | May 20–May 27 | 124 | two-plantings: Plant May 20 and again by Jul 14; both mature before Sep 21. | Jul 14 |
| Basil | Apr 8 | Jun 3–Jun 3 | 110 | fits: 60 days to maturity, 110 available after Jun 3. | Jul 9 |
| Cilantro | — | Apr 15–May 6 | 180 | two-plantings: Plant Apr 15 and again by Aug 9; both mature before Oct 12. | Aug 9 |
| Parsley | Mar 4 | May 20–May 27 | 145 | fits: 70 days to maturity, 145 available after May 20. | Jul 20 |
| Celery | Mar 4 | May 20–Jun 3 | 145 | fits: 120 days to maturity, 145 available after May 20. | May 31 |
| Scallions | Mar 4 | Apr 15–Apr 29 | 194 | two-plantings: Plant Apr 15 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Turnip | — | Apr 15–Apr 29 | 194 | two-plantings: Plant Apr 15 and again by Aug 23; both mature before Oct 26. | Aug 23 |
| Kohlrabi | — | Apr 1–Apr 15 | 208 | two-plantings: Plant Apr 1 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Bok Choy | Apr 15 | May 6–May 13 | 159 | two-plantings: Plant May 6 and again by Aug 14; both mature before Oct 12. | Aug 14 |
| Collards | Mar 4 | Apr 15–Apr 29 | 194 | two-plantings: Plant Apr 15 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Cantaloupe | Apr 29 | May 27–Jun 3 | 103 | fits: 85 days to maturity, 103 available after May 27. | May 31 |
| Chives | Feb 18 | May 20–May 27 | 159 | fits: 90 days to maturity, 159 available after May 20. | — |
| Dill | — | Mar 18–Jun 10 | 208 | two-plantings: Plant Mar 18 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Oregano | Mar 4 | May 20–May 27 | 159 | fits: 80 days to maturity, 159 available after May 20. | — |
| Rosemary | Feb 18 | May 20–May 27 | 145 | fits: 80 days to maturity, 145 available after May 20. | — |
| Sage | Mar 18 | May 20–May 27 | 159 | fits: 75 days to maturity, 159 available after May 20. | — |
| Thyme | Mar 4 | May 20–May 27 | 159 | fits: 90 days to maturity, 159 available after May 20. | — |
| Calendula | Apr 1 | Apr 29–May 13 | 166 | two-plantings: Plant Apr 29 and again by Aug 9; both mature before Oct 12. | Aug 9 |
| Cosmos | Apr 15 | May 13–May 27 | 131 | fits: 60 days to maturity, 131 available after May 13. | Jul 9 |
| Lavender | Feb 18 | May 13–May 27 | 166 | fits: 90 days to maturity, 166 available after May 13. | — |
| Marigolds | Apr 1 | May 13–May 20 | 131 | two-plantings: Plant May 13 and again by Jul 19; both mature before Sep 21. | Jul 19 |
| Melons | Apr 29 | May 27–Jun 3 | 103 | fits: 85 days to maturity, 103 available after May 27. | May 31 |
| Mint | — | May 13–May 27 | 166 | fits: 90 days to maturity, 166 available after May 13. | — |
| Nasturtiums | Apr 15 | May 13–May 20 | 131 | two-plantings: Plant May 13 and again by Jul 14; both mature before Sep 21. | Jul 14 |
| Pole Beans | — | May 20–Jun 3 | 124 | fits: 65 days to maturity, 124 available after May 20. | Jul 4 |
| Spaghetti Squash | Apr 29 | May 27–Jun 3 | 110 | fits: 90 days to maturity, 110 available after May 27. | Jun 2 |
| Sunflowers | — | May 13–May 27 | 131 | fits: 70 days to maturity, 131 available after May 13. | Jun 29 |
| Tomatillos | Mar 18 | May 20–May 27 | 110 | fits: 75 days to maturity, 110 available after May 20. | Jun 10 |
| Watermelon | Apr 29 | May 20–May 27 | 110 | fits: 80 days to maturity, 110 available after May 20. | Jun 5 |
| Yellow Squash | Apr 29 | May 27–Jun 3 | 117 | fits: 55 days to maturity, 117 available after May 27. | Jul 14 |
| Zinnias | Apr 15 | May 13–May 27 | 131 | fits: 60 days to maturity, 131 available after May 13. | Jul 9 |
Month by month in Kittanning
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 18), Lavender (Feb 18), Onion (Feb 18), Rosemary (Feb 18). |
| March | Start indoors: Celery (Mar 4), Collards (Mar 4), Kale (Mar 4), Oregano (Mar 4), Parsley (Mar 4), Scallions (Mar 4), +9 more. Direct sow from: Arugula (Mar 18), Beets (Mar 18), Dill (Mar 18), Peas (Mar 18), Radish (Mar 18), Spinach (Mar 18). |
| April | Start indoors: Calendula (Apr 1), Cauliflower (Apr 1), Marigolds (Apr 1), Pepper (Apr 1), Basil (Apr 8), Tomato (Apr 8), +15 more. Direct sow from: Kohlrabi (Apr 1), Cilantro (Apr 15), Turnip (Apr 15), Carrots (Apr 22), Potatoes (Apr 29). Transplant from: Broccoli (Apr 15), Brussel Sprouts (Apr 15), Cabbage (Apr 15), Collards (Apr 15), Kale (Apr 15), Lettuce (Apr 15), +4 more. Plant: Strawberry (Apr 8). |
| May | Direct sow from: Sunflowers (May 13), Beans (May 20), Pole Beans (May 20). Transplant from: Bok Choy (May 6), Cauliflower (May 6), Cosmos (May 13), Lavender (May 13), Marigolds (May 13), Mint (May 13), +24 more. Last frost around May 13. Last sowing dates: Cantaloupe (May 31), Celery (May 31), Melons (May 31). |
| June | Transplant from: Basil (Jun 3). Last sowing dates: Spaghetti Squash (Jun 2), Tomato (Jun 5), Watermelon (Jun 5), Pepper (Jun 10), Tomatillos (Jun 10), Eggplant (Jun 15), +2 more. |
| July | Last sowing dates: Brussel Sprouts (Jul 4), Pole Beans (Jul 4), Basil (Jul 9), Cosmos (Jul 9), Cucumber (Jul 9), Zinnias (Jul 9), +10 more. |
| August | Last sowing dates: Cabbage (Aug 3), Carrots (Aug 3), Beets (Aug 4), Dill (Aug 4), Swiss Chard (Aug 4), Calendula (Aug 9), +8 more. |
| September | Last sowing dates: Arugula (Sep 2), Spinach (Sep 2), Radish (Sep 3). |
| October | Direct sow from: Garlic (Oct 5). First frost around October 5. Last sowing dates: Garlic (Oct 26). |
| November | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Kittanning, PA (ZIP 16201)?
The median last spring frost date for Kittanning, PA (ZIP code 16201) is around May 13. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before April 25; one in ten it runs past May 31.
What is the first fall frost date in Kittanning, PA?
The median first fall frost date for Kittanning, PA is around October 5. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around September 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Kittanning, PA?
The frost-free growing season in Kittanning is about 145 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Kittanning (145 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 18 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Kittanning, PA?
Kittanning, PA is in USDA hardiness zone 6b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Kittanning, PA?
Start tomatoes indoors Apr 8 and plant out May 27 in Kittanning. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Kittanning?
Two: plant Apr 15 and again by Aug 14; both mature before Oct 12.
When do I plant garlic in Kittanning?
Oct 5 to Oct 26; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Indiana (ZIP 15701) has 153 frost-free days, 8 more than Kittanning (ZIP 16201). See Indiana ZIP 15701 frost dates
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