Weather archive in Ontario for the last week, weather in Ontario for september 2025 year

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Ontario International Airport

WEATHER IN Ontario

Weather forecast in Ontario
Climate monitor in Ontario

Time and date
09:53	07.09
10:53	07.09
11:53	07.09
12:53	07.09
13:53	07.09
14:53	07.09
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00:53	08.09
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08:53	09.09

Wind (dir.,mph)		Visibility	Phenomena	Clouds	Т (F)	Тd (F)	f (%)	Тe (F)	Тes (F)	Comfort	P (in)	Po (in)	Тmin (F)	Tmax (F)	R (in)	R24 (in)	S (in)
calm	0	10 miles		2/0 12000 ft [Ac]	86	53	32	88	108	hot	30.01	29.06	68	86
SW	9 {5}	10 miles		2/0 12000 ft [Ac]	91	46	21	88	102	hot	29.99	29.05
W	9 {5}	10 miles		2/0 12000 ft [Ac]	95	52	23	93	111	very hot	29.98	29.03
SW	14 {7}	10 miles		2/0 12000 ft [Ac]	96	49	20	93	104	very hot	29.96	29.01
W	13 {6}	10 miles		2/0 12000 ft [Ac]	97	45	17	93	104	very hot	29.95	290.00
SW	13 {6}	10 miles		2/0 12000 ft [Ac]	96	47	19	93	100	very hot	29.93	28.98
SW	14 {7}	10 miles		2/0 12000 ft [Ac]	95	51	23	93	99	very hot	29.93	28.98	86	98
W	13 {6}	10 miles		2/0 12000 ft [Ac]	93	44	19	90	91	hot	29.93	28.98
SW	11 {6}	10 miles		2/0 12000 ft [Ac]	89	43	20	86	86	hot	29.94	28.98
SW	11 {6}	10 miles		2/0 12000 ft [Ac]	85	42	22	82	82	hot	29.96	290.00
SW	10 {5}	10 miles		clear	81	48	32	81	81	hot	29.98	29.02
SW	9 {5}	10 miles		clear	79	44	29	79	79	hot	29.99	29.04
W	7 {4}	10 miles		clear	78	40	25	77	77	comfort	300.00	29.05	78	95
NW	7 {4}	10 miles		clear	75	39	27	73	73	comfort	300.00	29.05
calm	0	10 miles		clear	75	43	32	75	75	comfort	300.00	29.05
calm	0	10 miles		clear	75	42	31	75	75	comfort	300.00	29.05
calm	0	10 miles		clear	73	43	34	73	73	comfort	29.99	29.04
calm	0	10 miles		clear	73	43	34	73	73	comfort	29.98	29.03
calm	0	10 miles		clear	72	44	37	73	73	comfort	29.98	29.03	72	78
calm	0	10 miles		clear	71	44	38	72	72	comfort	29.99	29.03
calm	0	10 miles		2/0 8000 ft [Ac]	70	47	44	72	72	comfort	30.01	29.05
calm	0	10 miles		2/0 8000 ft [Ac]	74	48	40	77	77	comfort	30.01	29.06
calm	0	10 miles		2/0 8000 ft [Ac]	77	48	36	79	82	hot	30.02	29.07
calm	0	10 miles		2/0 8500 ft [Ac]	81	47	30	81	91	hot	30.02	29.07
SW	6 {3}	10 miles		clear	85	41	21	82	97	hot	30.01	29.06	70	85
		10 miles		clear	88	43	21	84	118	hot	29.99	29.04
SW	15 {8}	10 miles		clear	91	43	19	88	97	hot	29.96	29.01
W	10 {5}	10 miles		clear	93	38	15	88	106	hot	29.93	28.99
SW	10 {5}	10 miles		clear	93	43	18	90	106	hot	29.91	28.96
SW	13 {6}	10 miles		clear	93	48	22	91	100	hot	29.89	28.95
SW	13 {6}	10 miles		clear	89	51	27	88	95	hot	29.89	28.93	84	94
SW	11 {6}	10 miles		clear	86	53	32	88	91	hot	29.89	28.93
SW	11 {6}	10 miles		clear	82	54	38	84	86	hot	29.90	28.93
SW	10 {5}	10 miles		clear	78	55	45	81	81	hot	29.91	28.95
W	9 {5}	10 miles		clear	76	55	48	79	79	hot	29.91	28.95
SW	9 {5}	10 miles		clear	73	54	51	77	77	comfort	29.93	28.96
W	5 {2}	10 miles		clear	71	55	57	75	75	comfort	29.93	28.97	71	90
SW	5 {2}	10 miles		clear	69	56	63	75	75	comfort	29.93	28.97
calm	0	10 miles		clear	68	55	63	72	72	comfort	29.93	28.97
calm	0	10 miles		clear	67	56	68	70	70	comfort	29.91	28.96
calm	0	10 miles		clear	67	56	68	70	70	comfort	29.90	28.95
calm	0	10 miles		clear	65	56	73	66	66		29.89	28.93
calm	0	10 miles		clear	66	56	70	68	68		29.89	28.93	64	71
calm	0	10 miles		clear	64	56	75	64	64		29.90	28.93
		10 miles		clear	63	56	78	63	63		29.91	28.95
W	6 {3}	10 miles		2/2 1000 ft	63	58	84	63	63		29.93	28.95
SW	5 {2}	10 miles		2/2 1000 ft	67	58	73	72	73	comfort	29.93	28.96
		10 miles		2/2 1000 ft	70	58	66	75	86	comfort	29.93	28.96

Weather station location Ontario International Airport: latitude 34.0533 longitude -117.5758 Height above sea level 287 m.

The archive shows weather in Ontario for the last 1-2 days. The actual weather information in the database is updated hourly! The entire month and previous months archive data can be obtained by selecting the date range of interest from the drop-down list and pressing the "Enter!".

Attention! The METAR weather archive in database for stations not included in the climate monitor is stored for no more than 60 days. It makes no sense to try to choose an earlier date.

Attention! The time in the tables is local time (not including daylight saving time). To obtain Universal Time, subtract the correction, which is equal to -8 h.

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Column explanations:

Wind - indicated wind speed in m/s - average for 10 minutes, gusts within and between terms (in curly brackets) and direction from which the wind blows: N - North, NE - North-East, E - East, SE - South-East , S - South, SW - South-West, W - West, NW - North-West.
Visibility - horizontal range of visibility in meters or kilometers. When visibility is from 1 to 10 km in the absence of precipitation, haze is usually observed, and when visibility is reduced to 1 km or less, fog is observed. In dry weather, visibility may be reduced by smoke, dust, or haze.
Phenomena - atmospheric phenomena observed during the period of observations.
Clouds - are through slash total and lower clouds in points, and the height of the lower border of the cloud in meters; square brackets contain cloud forms: Ci - Cirrus, Cs - Cirrostratus, Cc - Cirrocumulus, Ac - Altocumulus, As - Altostratus, Sc - Stratocumulus, Ns - Nimbostratus, Cu - Cumulus, Cb - Cumulonimbus. For more information about cloud classification, see the cloud Atlas (PDF).
T - Air temperature - temperature measured at a height of 2 m above the ground.
Td - Dew point temperature - the temperature at which the water vapor contained in the air reaches saturation.
f - Relative humidity measured at a height of 2 m above the ground.
Te - Effective temperature is the temperature felt by a seasonally dressed person in the shade. Characteristic of stuffy weather. The calculation takes into account the effects of air humidity and wind speed on a person's heat sensation.
Tes - Effective sun temperature - The temperature a person feels, corrected for solar heating. Characteristic of sweltering weather. Depends on the height of the sun above the horizon, cloud cover, and wind speed. At night, overcast, and with winds of 12 m/s or more, the correction is zero.
P - Atmospheric pressure - atmospheric pressure reduced to sea level.
Po - Atmospheric pressure - atmospheric pressure measured at the station level.
Tmin - Minimum temperature - minimum air temperature at a height of 2 m above the ground.
Tmax - Maximum temperature - maximum air temperature at a height of 2 m above the ground.
R - Precipitation - The amount of precipitation over a period of time, mm. When you hover over the number, the time period for which the specified amount of precipitation has fallen.
R24 - Precipitation 24h - The amount of precipitation in 24 hours, mm.
S - Snow cover - The height of the snow cover. When you hover the mouse over the number - the state of the snow cover and the degree of coverage in points.