Siena College, New York Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Siena College weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——84°49°—
- FridayJun 5Overcast——88°58°+4°
- SaturdayJun 6Light Showers65%—81°64°-7°
- SundayJun 7Light Showers69%—73°55°-8°
- MondayJun 8Overcast——78°48°+5°
- TuesdayJun 9Overcast——85°55°+7°
- WednesdayJun 10Overcast14%—92°58°+7°
Ozone at AQI 42. AQI up 5 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 42. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 42
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
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
- 4:01 AM
- Moonset
- 1:52 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Siena College at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: May 2 (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 5, 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.
SPC Convective Outlook
Storm Prediction Center — Siena College
SPC has placed Siena College in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
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
Siena College's warmest month is July (~73°F mean) and its coldest is January (~24°F). Rainfall peaks in July (4.5 inches) and bottoms out in February (2.3 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 24° | 2.6″ | 6 |
| February | 27° | 2.3″ | 5 |
| March | 36° | 3.1″ | 7 |
| April | 48° | 3.1″ | 7 |
| May | 60° | 3.4″ | 8 |
| June | 68° | 4.0″ | 8 |
| July | 73° | 4.5″ | 8 |
| August | 71° | 3.8″ | 7 |
| September | 64° | 3.7″ | 6 |
| October | 51° | 3.9″ | 6 |
| November | 41° | 3.0″ | 6 |
| December | 30° | 3.3″ | 7 |
Regional context
Siena College sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: New York, NY, Brooklyn, NY, Queens, NY, Manhattan, NY, Bronx, NY.
Frequently asked
- When does it freeze in Siena College?
- Siena College's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Siena College?
- July is the wettest month with about 4.5 inches of rain on average; the city receives roughly 41 inches annually.
- What is the warmest month in Siena College?
- July is typically warmest, averaging about 73°F.
- What is the coldest month in Siena College?
- January is typically coldest, averaging about 24°F.
- When can I start a vegetable garden in Siena College?
- 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 Siena College get?
- Siena College averages about 81 rainy days per year.
- What hardiness zone is Siena College?
- Siena College'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
Siena College, New York sits in a warm-summer humid continental climate zone. January means hover near 24°F while July averages 73°F — a 49°F seasonal swing.
Across the year, Siena College receives about 41 inches of precipitation spread over roughly 81 rainy days.
The rhythm of the year is set by latitude (42.7°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.