This report describes the typical weather at the Hamilton Rbg Cs (Hamilton, Ontario, Canada) weather station over the course of an average June. It is based on the historical records from 2005 to 2012. Earlier records are either unavailable or unreliable.

Hamilton, Ontario has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by grasslands (56%), forests (20%), oceans and seas (15%), croplands (6%), and built-up areas (2%).

The month of June is characterized by rising daily high temperatures, with daily highs increasing from 73°F to 80°F over the course of the month, exceeding 86°F or dropping below 63°F only one day in ten.

Daily High and Low Temperature in June

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The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Fraction of Time Spent in Various Temperature Bands in June

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The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 1 with 15:11 hours of daylight; the longest day is June 18 with 15:23 hours of daylight.

Daily Hours of Daylight and Twilight in June

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The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:38am on June 12; the latest sunset is at 9:04pm on June 28; the latest sunrise is at 5:44am on June 30; the earliest sunset is at 8:53pm on June 1.

Daylight savings time is observed in 2012 but it neither starts nor ends in June, so the entire month is in daylight time.

Daily Sunrise & Sunset with Twilight and Daylight Savings Time in June

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight savings time are indicated by the "DST" labels.

This weather station does not reliably report sky cover.

There is either very little precipitation at this location in June, or the weather station does not reliably report the conditions.

Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.

The relative humidity typically ranges from 49% (comfortable) to 95% (very humid) over the course of a typical June, rarely dropping below 36% (comfortable) and reaching as high as 100% (very humid).

The air is driest around June 30, at which time the relative humidity drops below 56% (mildly humid) three days out of four; it is most humid around June 6, rising above 92% (very humid) three days out of four.

Relative Humidity in June

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The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical June, the dew point typically varies from 48°F (dry) to 64°F (mildy humid) and is rarely below 40°F (dry) or above 71°F (muggy).

The time of the month between June 1 and June 30 is the most comfortable, with dew points that are neither too dry nor too muggy.

Dew Point in June

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The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Over the course of June typical wind speeds vary from 0 mph to 7 mph (calm to light breeze), rarely exceeding 10 mph (gentle breeze).

The highest average wind speed of 4 mph (light breeze) occurs around June 10, at which time the average daily maximum wind speed is 7 mph (light breeze).

The lowest average wind speed of 4 mph (light breeze) occurs around June 18, at which time the average daily maximum wind speed is 7 mph (light breeze).

Wind Speed in June

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The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind Directions in June

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in June

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.