Siskiyou County Airport (KSIY) Aviation Weather, METAR, TAF & ATIS Alerts
Live aviation weather for Siskiyou County Airport in Montague, CA, including METAR, TAF, flight category, wind, visibility, ceiling, altimeter, runway crosswinds, and Telegram airport alerts.
Siskiyou County Airport (KSIY) is a general aviation airport serving pilots in and around Montague, CA at 2,648 ft. KSIY reports its own METAR — decoded live on this page as flight category, wind, visibility, ceiling and altimeter. Its 2 runways (17, 35) — longest 7,490 ft — are checked against the current wind in the crosswind table below. Automated weather is broadcast on 121.125. Track KSIY in the ATIS Alerts Telegram bot to get a message when a new METAR changes the picture — flight category, wind, or ceiling past your selected minimums.
Wind from the north (350°) at 11 kt, visibility 10+ statute miles, no cloud data, temperature 26°C (78°F), altimeter 29.96 inHg. Conditions are Visual Flight Rules (VFR).
METAR KSIY 290353Z AUTO 35011KT 10SM CLR 26/07 A2996 RMK AO2 SLP129 T02560072
What changed at KSIY?
Since the 0253Z (7:53 PM PDT) report — compared automatically against the latest METAR.
- Pressure rising: altimeter 29.94 → 29.96 inHg.
- Temperature down 3°C.
This is exactly what ATIS Alerts watches for you — get a Telegram message when KSIY's weather changes, free →
Current pilot readout for KSIY
KSIY is currently VFR with winds from 350° at 11 knots, visibility 10+ statute miles, and no ceiling reported. The strongest crosswind component is currently on runway 17, about 4 knots. Density altitude is approximately 4,500 ft (field elevation 2,648 ft). KSIY does not publish a TAF — the nearest TAF station is KLMT, about 40 nm away.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Get KSIY weather alerts in Telegram
Stop refreshing aviation weather manually. Track KSIY in ATIS Alerts and get notified when a new METAR changes the picture — a category drop, or wind and ceiling moving toward your minimums.
Track KSIY free on TelegramRunway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Use this section to quickly compare current wind alignment across available runways at KSIY. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 35FAV | 7,490 ft | ASP | 10 kt head | 4 kt left |
| 17 | 7,490 ft | ASP | 10 kt tail | 4 kt right |
Open the crosswind calculator — try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 23 h: wind 8→11 kt, ceiling unlimited → unlimited.
KSIY weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast — drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Siskiyou County Airport in Montague, CA: the NOAA/NWS NEXRAD composite updates about every five minutes, with NOAA lightning strike density overlaid. The loop plays the past 50 minutes, then continues into a future-radar forecast (+1 to +4 hours, NOAA HRRR model) so you can see where precipitation around KSIY is headed.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © OpenStreetMap © CARTO
Forecast frames (amber label) are HRRR model guidance, not observed radar. Lightning strike density appears as a blue-white glow when strikes are detected in view. Radar and lightning coverage are limited in parts of Alaska, Hawaii, and offshore areas. Not for navigation.
Recent aviation weather trends at KSIY
From ATIS Alerts' hourly weather history.
Over the past 24 hours, KSIY reported mostly VFR across 24 observations, with 0 flight-category changes. The strongest gust reached 20 kt. Wind most often came from the N.
- 35
- 75%
- 17
- 25%
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We'll message you on Telegram the moment a new METAR changes the picture at KSIY (Siskiyou County Airport) — flight category, wind, or ceiling past your minimums.
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Airport facts
Reference data from the OurAirports dataset.
- Type
- General aviation airport
- ICAO
- KSIY
- IATA
- SIY
- FAA LID
- SIY
- City
- Montague
- State
- California
- Country
- United States
- Elevation
- 2,648 ft
- Coordinates
- 41.7814, -122.4680
- Runways
- 2
- Longest runway
- 7,490 ft
- Weather reporting
- Reports METAR
- TAF
- Nearest KLMT
- AWOS/ASOS
- 121.125 MHz
- Time zone
- America/Los_Angeles
- Next sunset
- 22h 45m
Run a flight school, FBO, or club here? Embed KSIY's live status on your website — free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
7 airports+1 more within 25 NM
25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport — live wind, crosswind & flyability on each page.
- Siskiyou County R/Cers - Montague Rd — Montague, CA · 1 mi
- Siskiyou County R/Cers - Webb St — Montague, CA · 5 mi
Historical Flying Weather
2006–2025 · ATIS Alerts Flying Weather Index
Based on historical observations from 2006–2025, KSIY reported VFR conditions during about 93.1% of valid daylight observations, with an estimated 319 VFR flying days a year. June had the most VFR weather; December had the most instrument conditions. Surface winds averaged 5.3 kt, calm 29.4% of the time.
Full historical breakdown
Flight category by month
| Month | VFR % | MVFR % | IFR % | LIFR % |
|---|---|---|---|---|
| Jan | 83.8 | 5.8 | 2.9 | 7.5 |
| Feb | 92.0 | 3.6 | 1.7 | 2.6 |
| Mar | 95.3 | 3.4 | 0.6 | 0.7 |
| Apr | 97.2 | 2.3 | 0.3 | 0.2 |
| May | 97.5 | 1.9 | 0.3 | 0.3 |
| Jun | 99.3 | 0.7 | 0.0 | 0.0 |
| Jul | 97.2 | 2.0 | 0.7 | 0.1 |
| Aug | 89.3 | 7.3 | 3.2 | 0.2 |
| Sep | 94.7 | 3.5 | 1.6 | 0.3 |
| Oct | 96.6 | 2.0 | 0.5 | 0.9 |
| Nov | 89.6 | 4.4 | 1.3 | 4.7 |
| Dec | 82.5 | 6.7 | 2.6 | 8.2 |
Average wind by month
| Month | Mean wind (kt) |
|---|---|
| Jan | 4.4 kt |
| Feb | 5.0 kt |
| Mar | 6.3 kt |
| Apr | 6.0 kt |
| May | 6.1 kt |
| Jun | 6.5 kt |
| Jul | 5.9 kt |
| Aug | 5.3 kt |
| Sep | 4.8 kt |
| Oct | 4.4 kt |
| Nov | 4.3 kt |
| Dec | 4.3 kt |
Historical summary of past observations — not a forecast or safety rating. Always check the current METAR, TAF, and a weather briefing before flight.
KSIY weather — frequently asked
What runways are available at KSIY?+
KSIY has 2 runways — 17, 35; the longest is 7,490 ft. This page computes the live crosswind for each runway end from the current wind.
Does KSIY report its own weather?+
Yes — Siskiyou County Airport has its own weather station and publishes METAR observations, which this page decodes live.
Does KSIY have a TAF?+
No — KSIY does not publish its own TAF. The nearest TAF station is KLMT, about 40 nm away.
Does KSIY broadcast D-ATIS?+
No — KSIY does not broadcast D-ATIS. Alerts for KSIY from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR instead.
Pilot PIREPs for Siskiyou County Airport (KSIY)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Siskiyou County Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for KSIY yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only — not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
Why pilots use ATIS Alerts
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- Get pinged the moment KSIY drops below VFR or a new report moves your numbers.
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
No D-ATIS at this airport — showing METAR.
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