East Herkimer, New York Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
East Herkimer weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——81°44°—
- ThursdayJun 4Overcast——82°54°+1°
- FridayJun 5Light Drizzle——80°58°-2°
- SaturdayJun 6Light Showers78%0.07″76°63°-4°
- SundayJun 7Light Drizzle68%—76°54°0°
- MondayJun 8Overcast15%—74°49°-2°
- TuesdayJun 9Overcast——77°54°+3°
Ozone at AQI 41 — peak already passed at 1 PM under clear skies. AQI up 14 over the last 6 hours (gradual rise). Levels should ease through evening.
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 41 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 41
- UV peak
- 0.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 41
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
- 3:01 AM
- Moonset
- 11:44 AM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
East Herkimer at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: May 4 (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 3, 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 | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
East Herkimer's warmest month is July (~69°F mean) and its coldest is January (~20°F). Rainfall peaks in October (5.3 inches) and bottoms out in February (3.4 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 20° | 3.6″ | 12 |
| February | 22° | 3.4″ | 11 |
| March | 30° | 3.5″ | 12 |
| April | 44° | 4.0″ | 13 |
| May | 56° | 4.6″ | 15 |
| June | 64° | 4.8″ | 16 |
| July | 69° | 5.0″ | 17 |
| August | 68° | 4.3″ | 14 |
| September | 60° | 4.2″ | 14 |
| October | 49° | 5.3″ | 18 |
| November | 38° | 4.4″ | 15 |
| December | 27° | 4.4″ | 15 |
Regional context
East Herkimer's climate, per the NOAA NCEI 1991-2020 normals from the nearest reporting station, runs cold-winter and warm-summer. January means hover near 20°F while July climbs to 69°F — a 49°F seasonal swing typical of northern-tier latitudes. Annual precipitation totals about 51.4 inches spread across roughly 172 days with measurable rain or snow.
Rainfall stays relatively even across the calendar: October tops out at 5.3 inches across 18.0 days with measurable rain, and February settles around 3.4 inches across 11.0 rainy days — a comparatively narrow seasonal range. The temperate, evenly-distributed pattern groups East Herkimer with places like Ilion, NY, South Ilion, NY and East Frankfort, NY, where seasonal storm tracks deliver moisture more uniformly than the continental interior.
The frost-sensitive growing window opens around late-May, when overnight lows reliably clear freezing for cool-season crops like kale, peas, spinach, and parsnips. Warm-season transplants — tomatoes, peppers, and basil — typically wait two weeks past that date to avoid late spring cold snaps. The window closes around early-October, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These are 30-year central tendencies; year-to-year frost dates can move by up to two weeks. Local features matter: a south-facing slope inside East Herkimer typically runs 3-5 days ahead of the regional last-frost date, while a low-lying lot along a creek or drainage can lag the same date by a week or more on calm clear nights.
Similar climates: Ilion, NY, South Ilion, NY, East Frankfort, NY, Little Falls, NY, Middleville, NY.
Frequently asked
- When does it freeze in East Herkimer?
- East Herkimer's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in East Herkimer?
- October is the wettest month with about 5.3 inches of rain on average; the city receives roughly 51 inches annually.
- What is the warmest month in East Herkimer?
- July is typically warmest, averaging about 69°F.
- What is the coldest month in East Herkimer?
- January is typically coldest, averaging about 20°F.
- When can I start a vegetable garden in East Herkimer?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does East Herkimer get?
- East Herkimer averages about 172 rainy days per year.
- What hardiness zone is East Herkimer?
- East Herkimer'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
East Herkimer, New York sits in a warm-summer humid continental climate zone. January means hover near 20°F while July averages 69°F — a 49°F seasonal swing.
Across the year, East Herkimer receives about 51 inches of precipitation spread over roughly 172 rainy days.
The rhythm of the year is set by latitude (43.0°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.