Temperature
45 F at 3 AM; 54 F at its warmest, 9 AM Thursday, and 44 F at its coolest, 10 PM Thursday.
- Now
- 45F
- 3 AM
- Highest
- 54F
- 9 AM Thursday
- Lowest
- 44F
- 10 PM Thursday
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Mason City Municipal Airport, Iowa
Medium airport in Cerro Gordo County, Iowa* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Much of central Iowa. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
45°
51°/38°
Light rain·
Feels like 37°·Moderate breeze 19 mph NW
Alert. A Freeze Warning is in force for Mason City Municipal Airport until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Mason City Municipal Airport is 45° and light rain at 3 AM. With the wind it feels like 37°. The dew point is 41°, so the air feels dry and comfortable. Moderate breeze from the northwest at 19 mph.
Today and tonight. It warms to about 51° by 4 PM. Tonight falls to about 32° by 6 AM, under a mostly clear sky. A freeze: protect plants and pipes.
The week. The warmest day ahead is Thursday, near 73°, and the coolest tomorrow, near 58°. The days ahead look dry. The first freeze could come tomorrow, a low of 30°.
The sky tonight. The sun sets at 6:29 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:16 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 2 minutes long, 3 minutes shorter than yesterday.
0UV Low
40Air quality
86%Humidity
100%Cloud
Now
3:00 AM
45feels37
19mph
Today
Oct 16
5138
26%
26mph
Sat
Oct 17
5830
17mph
Sun
Oct 18
6438
18mph
Mon
Oct 19
6640
overcast
Tue
Oct 20
6942
overcast
Wed
Oct 21
7247
11%
Thu
Oct 22
7352
12%
45°
51°38°
58°30°
64°38°
66°40°
69°42°
72°47°
73°52°
As of 3:00 AM in Mason City Municipal Airport, Iowa.
Air quality
The air at Mason City Municipal Airport
Index 40, good, led by fine particles. Read at 3 AM from its reporting area, Waterloo (IA), 66 miles off.
40Good
- Fine particles (PM2.5)40Good-
The days ahead
Good each day through Today, led by ozone. Yesterday measured 21, good.
GoodModerate
- 21YesterdayOct 15
- 23TodayOct 16
Smoke, the next 41 hours
No smoke near the ground through Sat 7 PM.
Precipitation
What has fallen at Mason City Municipal Airport
0.84 in in the last 24 hours, and none in the 2 days before, to Fri 2 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.84in
- Last 3 days
- 0.84in
Visibility
How far you can see at Mason City Municipal Airport, the next 41 hours
Visibility stays 6 miles or more through Sat 7 PM, lowest 7 miles Fri 5 AM.
F
Now, today, and the week
Weather instrument stations by state
Airfield
- Code
- MCW
- ICAO
- KMCW
- IATA
- MCW
- Field elevation
- 1,213 ft
- Serves
- Mason City
- Kind
- Medium airport
- Scheduled service
- Yes
- Its own instrument
- MCW
- Wind now
- From 310° at 23 mph, read 16 Oct, 03:27
Runways
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 12 / 30 | 5,502 ft | 150 ft | Asphalt | 125° / 305° | 23 mph head, on 30 | 2 mph from the right |
| 18 / 36 | 6,501 ft | 150 ft | Asphalt | 180° / 0° | 15 mph head, on 36 | 18 mph from the left |
Measured here
What the airfield's own instrument measured, the last 24 hours
Every hour from Mason City (MCW), Mason City Municipal Airport's own instrument, measure by measure, on the field's own clock.
Humidity and dew point
A dew point of 41 F, the air 86% saturated; the humidity ran from 79% at 9 PM Thursday to 98% at 4 AM Thursday.
- Dew point now
- 41F
- 3 AM
- Humidity now
- 86%
- Humidity, range
- 79 to 98%
How it is measured: Humidity variables, Field Book FB-WAT-002
Wind
19 mph from the northwest at 3 AM; at its strongest 20 mph, 9 PM Thursday, with a gust of 36 mph at 2 PM Thursday.
- Now
- 19mph
- from the northwest
- Strongest
- 20mph
- 9 PM Thursday
- Highest gust
- 36mph
- 2 PM Thursday
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
Pressure
30.10 inHg at 3 AM, rising 0.02 inHg over 3 hours; 0.02 inHg higher than a day before.
- Now
- 30.10inHg
- 3 AM
- 3 hours
- +0.02inHg
- rising
- 24 hours
- +0.02inHg
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Visibility
Down to 2 miles at 1 PM Thursday; 10 miles or more now.
- Now
- 10+mi
- Lowest
- 2mi
- 1 PM Thursday
- Hours under a mile
- 0
How it is measured: Fog types, Field Book FB-WAT-020
Cloud base
The lowest cloud base came down to 300 ft at 4 AM Thursday; a base was reported in 22 of the hours.
- Lowest base now
- 1,600ft
- Lowest in 24 hours
- 300ft
- 4 AM Thursday
- Hours with a base reported
- 22
How it is measured: Cloud classification, Field Book FB-SKY-001
Precipitation
0.84 in measured in the gauge, the most, 0.18 in, in the hour to 10 AM Thursday.
- Last 24 hours
- 0.84in
- Wettest hour
- 0.18in
- 10 AM Thursday
- Hours with some
- 19
How it is measured: ASOS, Field Book FB-INS-002
Mason City: every reading, the last 7 days, 30 days and the year, and how well it reports
What is measuring near here
The 4 instruments nearest Mason City Municipal Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.
measured now2 instruments
Mason CityMCW
At an airfield/0.4 mi away/1,214 ft/1 ft above here
temp, wind, gust, visibility, precip, pressure
Mason City (I-35)RMCI4
Beside a road/8.4 mi away/1,234 ft/21 ft above here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Clear Lake 1.1 NWIA-CG-16
In a volunteer observer's own ground/3.0 mi away/1,222 ft/9 ft above here
precip, snowfall, snow depth
Mason CityMCWI4
At a cooperative observer's station/6.8 mi away/1,096 ft/117 ft below here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
0in
Snow on the ground
Measured at Mason City (MCWI4), 6.8 miles from here, read 15 Oct, 07:00. measured daily
Elsewhere in Iowa
15 places, each with its own forecast and its own instruments.
Near Mason City Municipal Airport
The nearest places, each with its own forecast and the instruments nearest it.
- Clear Lakecity, 3 mi
- Mason Citycity, 6 mi
- Burchinalcommunity, 7 mi
- Venturacity, 8 mi
- Hanlontowncity, 9 mi
- Fertilecity, 9 mi
- Portlandcommunity, 11 mi
- Manlycity, 11 mi
- Plymouthcity, 12 mi
- Swaledalecity, 13 mi
- Rock Fallscity, 13 mi
- Millercommunity, 14 mi
Airports near Mason City Municipal Airport
- Forest City Municipal AirportFXY, 16 mi
- Hampton Municipal AirportHPT, 31 mi
- Clarion Municipal AirportCAV, 36 mi
- Northeast Iowa Regional AirportCCY, 37 mi
- Iowa Falls Municipal AirportIFA, 48 mi
- Algona Municipal AirportAXA, 48 mi
- Webster City Municipal AirportEBS, 57 mi
- Fort Dodge Regional AirportFOD, 61 mi