Climate and Average Weather Year Round in Syracuse New York, United States

In Syracuse, the summers are warm and partly cloudy and the winters are freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 16°F to 82°F and is rarely below -1°F or above 90°F.

Based on the tourism score, the best time of year to visit Syracuse for warm-weather activities is from mid June to early September.

The warm season lasts for 3.7 months, from May 25 to September 16, with an average daily high temperature above 72°F. The hottest month of the year in Syracuse is July, with an average high of 82°F and low of 63°F.

The cold season lasts for 3.3 months, from December 2 to March 12, with an average daily high temperature below 41°F. The coldest month of the year in Syracuse is January, with an average low of 18°F and high of 32°F.

In Syracuse, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Syracuse begins around April 18 and lasts for 6.7 months, ending around November 8.

The clearest month of the year in Syracuse is August, during which on average the sky is clear, mostly clear, or partly cloudy 63% of the time.

The cloudier part of the year begins around November 8 and lasts for 5.3 months, ending around April 18.

The cloudiest month of the year in Syracuse is January, during which on average the sky is overcast or mostly cloudy 75% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Syracuse varies throughout the year.

The wetter season lasts 8.8 months, from March 20 to December 14, with a greater than 30% chance of a given day being a wet day. The month with the most wet days in Syracuse is June, with an average of 11.1 days with at least 0.04 inches of precipitation.

The drier season lasts 3.2 months, from December 14 to March 20. The month with the fewest wet days in Syracuse is February, with an average of 6.6 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Syracuse changes throughout the year.

Rain alone is the most common for 11 months, from February 7 to January 7. The month with the most days of rain alone in Syracuse is June, with an average of 11.1 days.

Snow alone is the most common for 1.0 months, from January 7 to February 7. The month with the most days of snow alone in Syracuse is January, with an average of 3.4 days.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Syracuse experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Syracuse. The month with the most rain in Syracuse is October, with an average rainfall of 3.4 inches.

The month with the least rain in Syracuse is February, with an average rainfall of 1.0 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Syracuse experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.3 months, from November 4 to April 13, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Syracuse is February, with an average snowfall of 8.2 inches.

The snowless period of the year lasts for 6.7 months, from April 13 to November 4. The least snow falls around July 12, with an average total accumulation of 0.0 inches.

The length of the day in Syracuse varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 0 minutes of daylight; the longest day is June 20, with 15 hours, 22 minutes of daylight.

The earliest sunrise is at 5:24 AM on June 14, and the latest sunrise is 2 hours, 17 minutes later at 7:41 AM on November 2. The earliest sunset is at 4:29 PM on December 9, and the latest sunset is 4 hours, 18 minutes later at 8:48 PM on June 26.

Daylight saving time (DST) is observed in Syracuse during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Syracuse experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.6 months, from May 31 to September 18, during which time the comfort level is muggy, oppressive, or miserable at least 8% of the time. The month with the most muggy days in Syracuse is July, with 8.8 days that are muggy or worse.

The least muggy day of the year is February 15, when muggy conditions are essentially unheard of.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Syracuse experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.9 months, from November 18 to April 14, with average wind speeds of more than 6.3 miles per hour. The windiest month of the year in Syracuse is February, with an average hourly wind speed of 8.3 miles per hour.

The calmer time of year lasts for 7.1 months, from April 14 to November 18. The calmest month of the year in Syracuse is August, with an average hourly wind speed of 4.3 miles per hour.

The predominant average hourly wind direction in Syracuse varies throughout the year.

The wind is most often from the south for 1.2 months, from September 5 to October 11, with a peak percentage of 38% on October 3. The wind is most often from the west for 11 months, from October 11 to September 5, with a peak percentage of 46% on January 1.

Syracuse is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from July 3 to September 22, with an average temperature above 65°F. The month of the year in Syracuse with the warmest water is August, with an average temperature of 72°F.

The time of year with cooler water lasts for 5.0 months, from December 16 to May 16, with an average temperature below 43°F. The month of the year in Syracuse with the coolest water is March, with an average temperature of 36°F.

To characterize how pleasant the weather is in Syracuse throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Syracuse for general outdoor tourist activities is from mid June to early September, with a peak score in the second week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Syracuse for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Syracuse typically lasts for 5.7 months (172 days), from around April 25 to around October 15, rarely starting before April 10 or after May 11, and rarely ending before September 27 or after November 5.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Syracuse should appear around April 19, only rarely appearing before April 5 or after May 1.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.6 months, from May 3 to August 22, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Syracuse is June, with an average of 6.6 kWh.

The darker period of the year lasts for 3.6 months, from October 31 to February 16, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest month of the year in Syracuse is December, with an average of 1.3 kWh.

For the purposes of this report, the geographical coordinates of Syracuse are 43.048 deg latitude, -76.147 deg longitude, and 397 ft elevation.

The topography within 2 miles of Syracuse contains only modest variations in elevation, with a maximum elevation change of 315 feet and an average elevation above sea level of 452 feet. Within 10 miles contains only modest variations in elevation (1,240 feet). Within 50 miles also contains very significant variations in elevation (1,886 feet).

The area within 2 miles of Syracuse is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (44%) and trees (34%), and within 50 miles by trees (48%) and cropland (32%).