Irondequoit, United States experiences average highs of 14°C (57°F) and lows of 7°C (45°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Average highs have cooled by 1.0°C (1.8°F) across the available records.
Irondequoit, United States Weather & Climate 2026
Monthly climate averages for Irondequoit, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Mar–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.8/10
Best: May, June, July, August, September
UV Index
4
Low
Temperature 14°C / 7°C
Feels Like 12°C / 4°C
Rainy Days 13
Rainfall 93 mm
Sunshine 8 h
Humidity 73%
Wind Speed 23 km/h
Dew Point 6°C
Snow Days 12 days
Frost Days 16 days
Hottest Month
27°C
July
Avg Low19°C
Rain11days
Coldest Month
-5°C
January
Avg High1°C
Rain18days
Driest Month
9days
September
Avg High23°C
Avg Low16°C
Windiest Month
28 km/h
February (Gusts 49)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 05:31
Daylight 15.4h
Sunset 20:53
Live conditions—
Irondequoit on the map · live conditions
Irondequoit, United States
- Continent
- Americas
- Country
- United States
- City
- Irondequoit
- Population
- 51.7K
- Elevation
- 116 m
- Coordinates
- 43.21°, -77.58°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 4°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 25°C
Avg Low 18°C
Rain 11 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 16°C
Avg Low 10°C
Rain 13 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 3°C
Avg Low -4°C
Rain 16 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 1°C / -5°C . Feb: 3°C / -4°C . Mar: 7°C / -1°C . Apr: 12°C / 4°C . May: 18°C / 10°C . Jun: 23°C / 16°C . Jul: 27°C / 19°C . Aug: 26°C / 19°C . Sep: 23°C / 16°C . Oct: 17°C / 10°C . Nov: 9°C / 3°C . Dec: 4°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 96 mm. Feb: 84 mm. Mar: 80 mm. Apr: 109 mm. May: 81 mm. Jun: 73 mm. Jul: 96 mm. Aug: 94 mm. Sep: 72 mm. Oct: 131 mm. Nov: 96 mm. Dec: 101 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 72%. Mar: 69%. Apr: 71%. May: 74%. Jun: 71%. Jul: 72%. Aug: 73%. Sep: 73%. Oct: 73%. Nov: 73%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 27 km/h . Feb: 28 km/h . Mar: 27 km/h . Apr: 25 km/h . May: 20 km/h . Jun: 20 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 19 km/h . Oct: 23 km/h . Nov: 27 km/h . Dec: 28 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 8h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 7h. Nov: 6h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 19 days. Feb: 15 days. Mar: 9 days. Apr: 4 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 6 days. Dec: 16 days.
Climate Trends
Average highs have cooled by 1.0°C (1.8°F) across the available records. Average rainfall is trending wetter by about 15 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 28°C | Jul · 27°C |
| Coldest month | Jan 2025 · -6°C | Jan · -5°C |
| Wettest month | May 2025 · 156 mm | Oct · 131 mm |
| Windiest month | Dec 2025 · 32 km/h | Feb · 28 km/h |
Month-by-Month Weather Table
January
Wet 
February
Poor March
Poor April
Poor May best
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -5°C | -4°C / -11°C | 18days (96 mm) Wet | 4.6h Fair | 74% Muggy | 1.9 Low | Wet | View Details |
| February | 3°C / -4°C | -2°C / -10°C | 13days (84 mm) Wet | 5.9h Fair | 72% Muggy | 3 Moderate | Poor | View Details |
| March | 7°C / -1°C | 3°C / -6°C | 12days (80 mm) Wet | 7.5h Good | 69% Muggy | 4 Moderate | Poor | View Details |
| April | 12°C / 4°C | 9°C / -1°C | 13days (109 mm) Wet | 8.5h Good | 71% Muggy | 4.8 Moderate | Poor | View Details |
| May best | 18°C / 10°C | 17°C / 7°C | 12days (81 mm) Wet | 10.3h Excellent | 74% Muggy | 5.8 High | Good | View Details |
| June best | 23°C / 16°C | 24°C / 15°C | 11days (73 mm) Wet | 11.8h Excellent | 71% Muggy | 6.6 High | Excellent | View Details |
| July best | 27°C / 19°C | 29°C / 20°C | 11days (96 mm) Wet | 12h Excellent | 72% Muggy | 6.7 High | Excellent | View Details |
| August best | 26°C / 19°C | 28°C / 19°C | 12days (94 mm) Wet | 11.1h Excellent | 73% Muggy | 5.8 High | Excellent | View Details |
| September best | 23°C / 16°C | 23°C / 15°C | 9days (72 mm) Wet | 9.6h Good | 73% Muggy | 5 Moderate | Excellent | View Details |
| October | 17°C / 10°C | 14°C / 7°C | 14days (131 mm) Wet | 6.9h Fair | 73% Muggy | 3.4 Moderate | Good | View Details |
| November | 9°C / 3°C | 5°C / -2°C | 15days (96 mm) Wet | 5.5h Fair | 73% Muggy | 2.1 Moderate | Poor | View Details |
| December | 4°C / -2°C | -1°C / -7°C | 18days (101 mm) Wet | 4.4h Fair | 75% Muggy | 1.6 Low | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Irondequoit are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Irondequoit, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Irondequoit is July, with average daytime highs of 27°C (81°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Irondequoit is January, with average overnight lows of -5°C (23°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Irondequoit is October, averaging 131mm of precipitation across 14 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Irondequoit runs through January, December, November, October, with the heaviest rainfall in January. Based on 10-year averages for Irondequoit.
Irondequoit receives approximately 98 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Irondequoit.
The least favorable months to visit Irondequoit are January, February, March, December, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Irondequoit is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Irondequoit is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Irondequoit receives snow. Months with snowfall average 12 snow days and 21 cm (8 in) of accumulation, with about 16 frost days during winter.
Average wind speeds in Irondequoit are 23 km/h (14 mph). The windiest month is February with peak winds reaching 28 km/h (17 mph) (gusts up to 49 km/h / 31 mph).
Irondequoit averages 3 clear-sky days per month with overall cloud cover around 65%. The clearest skies occur in September.
The annual average dew point in Irondequoit is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Irondequoit has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Irondequoit ranges from 4°C (39°F) to 12°C (54°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Irondequoit. It earns a climate score of 8.6/10 with Excellent.
For June in Irondequoit, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 23°C (74°F) and 11 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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