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Thunder Bay Weather Forecast

Temperature, wind, rain and more for Thunder Bay

Michigan, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 18
May		13:00

N
N

 9 / 10 mph 53 / 48°F 68% 1013 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 17%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

 7 / 10 mph 53 / 49°F 66% 1014 mb
Low level cloud: 70%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

 7 / 11 mph 51 / 47°F 70% 1015 mb
Low level cloud: 45%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 8 / 10 mph 48 / 44°F 78% 1017 mb
Low level cloud: 29%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 19
May		01:00

NNW
NNW

 10 / 15 mph 44 / 39°F 73% 1017 mb
Low level cloud: 0%
Mid level cloud: 81%
High level cloud: 0%
Most Significant Cloud Type: medium
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 10 / 16 mph 44 / 39°F 66% 1019 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 10 / 13 mph 44 / 38°F 67% 1021 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 11 / 12 mph 45 / 40°F 55% 1022 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

 8 / 10 mph 48 / 44°F 47% 1022 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 7 / 12 mph 50 / 47°F 40% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

 6 / 14 mph 48 / 44°F 52% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 82%
Most Significant Cloud Type: high
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

 8 / 17 mph 42 / 37°F 58% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In

Other Locations Near to Thunder Bay

The 7 day weather forecast summary for Thunder Bay:

For Thunder Bay in the coming week the average daytime maximum temperature will be around 11°C, with a high for the week of 17°C expected on the afternoon of Sunday 25th. The mean minimum temperature will be 5°C, dipping to its lowest on the morning of Tuesday 20th at 3°C. Expect the week ahead to have mostly dry days although Thursday is likely to see a little rain. Current predictions suggest Thursday 20th will have the most precipitation with an accumulation of around 1.0mm. On the whole winds are likely to be moderate.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure