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December 2019 Weather History in Ontario United States

The data for this report comes from the Ontario Municipal Airport. See all nearby weather stations

This report shows the past weather for Ontario, providing a weather history for December 2019. It features all historical weather data series we have available, including the Ontario temperature history for December 2019. You can drill down from year to month and even day level reports by clicking on the graphs.

Ontario Temperature History December 2019

History:20212020JFMAMJJASONDec20182017
Temperature history in December 2019 in Ontario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031315°F5°F10°F10°F15°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°FNovJan
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Hourly Temperature in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanfreezingvery coldcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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Cloud Cover in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Cloud Cover in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Daily Precipitation in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Daily Precipitation in December 2019 in Ontario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 inNovJan
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Observed Weather in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Sun, Dec 1 Snow, Light Snow, Freezing Fog, Mist0.34 inSN, -SN, FZFG, BR
Mon, Dec 2 Light Snow, Light Rain, Fog, Mist, Unknown Precipitation0.00 in-SN, -RA, FG, BR, UP
Tue, Dec 3 Fog, MistFG, BR
Wed, Dec 4 Haze, Fog, MistHZ, FG, BR
Thu, Dec 5 Haze, MistHZ, BR
Fri, Dec 6 MistBR
Sat, Dec 7 Light Rain, Haze, Mist0.19 in-RA, HZ, BR
Sun, Dec 8 Light Rain, Fog, Mist0.03 in-RA, FG, BR
Mon, Dec 9 Haze, MistHZ, BR
Wed, Dec 11 Light Rain, Mist0.11 in-RA, BR
Thu, Dec 12 Light Rain, Haze, Mist0.13 in-RA, HZ, BR
Fri, Dec 13 Light Rain, Mist0.02 in-RA, BR
Sat, Dec 14 Light Rain, Mist0.01 in-RA, BR
Wed, Dec 18 Light Snow, Mist0.00 in-SN, BR
Thu, Dec 19 Snow, Light Snow, Light Rain, Fog, Mist, Unknown Precipitation0.14 inSN, -SN, -RA, FG, BR, UP
Fri, Dec 20 MistBR
Mon, Dec 23 HazeHZ
Wed, Dec 25 Light Snow0.00 in-SN
Fri, Dec 27 MistBR
Sat, Dec 28 MistBR
Sun, Dec 29 Light Snow, Haze, Mist0.03 in-SN, HZ, BR
Mon, Dec 30 MistBR
Tue, Dec 31 Unknown Precipitation0.01 inUP

Hours of Daylight and Twilight in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Hours of Daylight and Twilight in December 2019 in Ontario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 218 hr, 53 minDec 218 hr, 53 minnightnightdaydayDec 19 hr, 9 minDec 19 hr, 9 minDec 318 hr, 57 minDec 318 hr, 57 minDec 118 hr, 57 minDec 118 hr, 57 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

Sunrise & Sunset with Twilight in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Sunrise & Sunset with Twilight in December 2019 in Ontario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan8:02 AM8:02 AMDec 15:11 PMDec 15:11 PM8:22 AM8:22 AMDec 315:19 PMDec 315:19 PM8:10 AM8:10 AMDec 95:09 PMDec 95:09 PM8:19 AM8:19 AMDec 215:12 PMDec 215:12 PM
The solar day over the course of December 2019. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Solar Elevation and Azimuth in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Solar Elevation and Azimuth in December 2019 in OntarioDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan00101020200010102020
northeastsouthwest
Solar elevation and azimuth over the course of December 2019. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Moon Rise, Set & Phases in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 268:06 AMNov 268:06 AMDec 1110:13 PMDec 1110:13 PMDec 2510:14 PMDec 2510:14 PM7:50 AM7:50 AM5:39 PM5:39 PM5:04 PM5:04 PM8:37 AM8:37 AM7:49 AM7:49 AM5:00 PM5:00 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Dec 2019IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
29%12:29 PMESE10:09 PMWSW-5:19 PMS247,352 mi
2
38%1:02 PMESE11:11 PMWSW-6:06 PMS249,472 mi
3
50%1:31 PMESE--6:51 PMS250,817 mi
4
58%-12:12 AMWSW1:55 PMESE7:33 PMS251,309 mi
5
67%-1:12 AMW2:18 PME8:14 PMS250,942 mi
6
76%-2:12 AMW2:40 PME8:55 PMS249,779 mi
7
84%-3:13 AMW3:03 PME9:36 PMS247,942 mi
8
91%-4:15 AMW3:27 PMENE10:20 PMS245,604 mi
9
96%-5:19 AMWNW3:54 PMENE11:06 PMS242,966 mi
10
99%-6:25 AMWNW4:26 PMENE11:55 PMS240,243 mi
11
100%-7:31 AMWNW5:04 PMENE--
12
100%-8:37 AMWNW5:50 PMENE12:48 AMS237,639 mi
13
98%-9:39 AMWNW6:45 PMENE1:44 AMS235,323 mi
14
94%-10:35 AMWNW7:49 PMENE2:41 AMS233,410 mi
15
88%-11:23 AMWNW8:59 PMENE3:38 AMS231,950 mi
16
79%-12:03 PMWNW10:12 PMENE4:35 AMS230,938 mi
17
69%-12:37 PMWNW11:26 PMENE5:28 AMS230,333 mi
18
50%-1:07 PMW-6:20 AMS230,081 mi
19
46%12:39 AME1:35 PMW-7:10 AMS230,145 mi
20
34%1:52 AME2:02 PMW-7:59 AMS230,511 mi
21
23%3:05 AME2:30 PMWSW-8:49 AMS231,199 mi
22
14%4:18 AMESE3:00 PMWSW-9:40 AMS232,246 mi
23
7%5:31 AMESE3:34 PMWSW-10:33 AMS233,691 mi
24
2%6:42 AMESE4:14 PMWSW-11:28 AMS235,548 mi
25
0%7:49 AMESE5:00 PMWSW-12:24 PMS237,783 mi
26
0%8:49 AMESE5:53 PMWSW-1:21 PMS240,305 mi
27
3%9:41 AMESE6:52 PMWSW-2:16 PMS242,961 mi
28
8%10:25 AMESE7:53 PMWSW-3:09 PMS245,560 mi
29
14%11:01 AMESE8:56 PMWSW-3:58 PMS247,890 mi
30
22%11:31 AMESE9:58 PMWSW-4:44 PMS249,749 mi
31
30%11:58 AMESE10:59 PMWSW-5:28 PMS250,959 mi

Humidity Comfort Levels in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Humidity Comfort Levels in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Wind Speed in December 2019 in Ontario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphNovJan
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Hourly Wind Speed in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Hourly Wind Direction in 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in December 2019 in Ontario

History:20212020JFMAMJJASONDec20182017
Atmospheric Pressure in December 2019 in Ontario18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.2 inHg29.2 inHg29.4 inHg29.4 inHg29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHg30.6 inHg30.6 inHgNovJan
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the Ontario Municipal Airport page.

See all nearby weather stations

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