WxDecoder

US-3938 Weather Grimes Airport

Rosamond, CaliforniaElevation 2,371 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KWJF · 4 NM S · 56 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KWJF
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 290° at 4 kt, visibility 10 SM, temperature 8C. Treat this as supplemental, not an aviation observation. Forecast suggests sunday sunny, high near 76F, low near 43F, 0% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES
Strong winds in the forecastWeather.gov
Monday: winds up to 30 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Sunday Sunny 76/43 SW 9 kt – 0%
Monday Sunny 78/42 W 17 kt 30 kt 0% Strong winds in the forecast
Tuesday Sunny 75/43 WSW 13 kt – 0%
Wednesday Mostly Sunny 75/44 WSW 13 kt – 0%
Thursday Partly Sunny 72/44 SW 13 kt – 9%
Friday Mostly Sunny then Slight Chance Rain Showers 67/42 WSW 17 kt – 17%
Saturday Slight Chance Rain Showers 63 WSW 13 kt – 24%

Source: National Weather Service (office LOX). Forecast issued 1051Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for US-3938. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
2,371 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0107Z 6:07 PM
Sunrise
1407Z 7:07 AM
Loggable night
0133Z (6:33 PM local) → 1341Z (6:41 AM local)
end of evening to start of morning civil twilight
Position lights required
0107Z (6:07 PM local) → 1407Z (7:07 AM local)
sunset to sunrise (91.209)
Night passenger currency
0207Z (7:07 PM local) → 1307Z (6:07 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Grimes Airport is in Rosamond, California. Field elevation 2,371 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSmall airport
CHARTS & AIRSPACE
ICAO / IATAUS-3938
RegionCalifornia
CountryUnited States
Coordinates34.8086, -118.2262
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

US-3938 traffic patterns

2026-09-05 to 2026-09-05, 1 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
3
AVG OPS/DAY
5
Operations trend (1 days)

Busiest day: Sat · Busiest month: Sep

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›H47 (Helicopter) · ~2 landings/mo
›H60 (Helicopter) · ~1 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly rotorcraft.

›H47 (Helicopter)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

US-3938 has no on-field report. Nearest reporting station: KWJF (4 NM S, VFR).

KWJF General William J Fox Airfield
4 NM S
VFR
KPMD Palmdale Regional Airport / USAF Plant 42 Airport
13 NM SE
VFR
KMHV Mojave Air & Space Port
15 NM N
VFR
KEDW Edwards Air Force Base
18 NM E
VFR
KTSP Tehachapi Municipal Airport
22 NM NW
VFR
KWHP Whiteman Airport
34 NM S
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-3938 on OurAirports
FREQUENTLY ASKED
Does US-3938 have a METAR?
No on-field METAR is issued for US-3938. This page uses the nearest reporting station as a reference.
Does US-3938 have a TAF?
No TAF is issued directly for US-3938. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-3938?
US-3938 sits at 2,371 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-3938?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.